Amazon EMR Amazon EMR Release Guide Amazon EMR Amazon EMR Release Guide Amazon EMR: Amazon EMR Release Guide Copyright © 2022 Amazon Web Services, Inc. and/or its affiliates. All rights reserved. Amazon's trademarks and trade dress may not be used in connection with any product or service that is not Amazon's, in any manner that is likely to cause confusion among customers, or in any manner that disparages or discredits Amazon. All other trademarks not owned by Amazon are the property of their respective owners, who may or may not be affiliated with, connected to, or sponsored by Amazon. Amazon EMR Amazon EMR Release Guide Table of Contents About Amazon EMR Releases............................................................................................................... 1 Amazon EMR 6.x release versions ................................................................................................. 2 Application versions in Amazon EMR 6.x releases ................................................................... 2 emr-6.9.0.......................................................................................................................... 2 emr-6.8.0........................................................................................................................ 19 emr-6.7.0........................................................................................................................ 36 emr-6.6.0........................................................................................................................ 53 emr-6.5.0........................................................................................................................ 71 emr-6.4.0........................................................................................................................ 87 emr-6.3.1...................................................................................................................... 106 emr-6.3.0...................................................................................................................... 121 emr-6.2.1...................................................................................................................... 140 emr-6.2.0...................................................................................................................... 155 emr-6.1.1...................................................................................................................... 174 emr-6.1.0...................................................................................................................... 185 emr-6.0.1...................................................................................................................... 200 emr-6.0.0...................................................................................................................... 210 Amazon EMR 5.x release versions ............................................................................................. 222 Application versions in Amazon EMR 5.x releases ................................................................ 224 emr-5.36.0..................................................................................................................... 224 emr-5.35.0..................................................................................................................... 239 emr-5.34.0..................................................................................................................... 255 emr-5.33.1..................................................................................................................... 269 emr-5.33.0..................................................................................................................... 286 emr-5.32.1..................................................................................................................... 299 emr-5.32.0..................................................................................................................... 312 emr-5.31.1..................................................................................................................... 328 emr-5.31.0..................................................................................................................... 339 emr-5.30.2..................................................................................................................... 352 emr-5.30.1..................................................................................................................... 363 emr-5.30.0..................................................................................................................... 376 emr-5.29.0..................................................................................................................... 388 emr-5.28.1..................................................................................................................... 399 emr-5.28.0..................................................................................................................... 409 emr-5.27.1..................................................................................................................... 420 emr-5.27.0..................................................................................................................... 430 emr-5.26.0..................................................................................................................... 440 emr-5.25.0..................................................................................................................... 451 emr-5.24.1..................................................................................................................... 462 emr-5.24.0..................................................................................................................... 472 emr-5.23.1..................................................................................................................... 482 emr-5.23.0..................................................................................................................... 491 emr-5.22.0..................................................................................................................... 501 emr-5.21.2..................................................................................................................... 512 emr-5.21.1..................................................................................................................... 521 emr-5.21.0..................................................................................................................... 531 emr-5.20.1..................................................................................................................... 541 emr-5.20.0..................................................................................................................... 550 emr-5.19.1..................................................................................................................... 561 emr-5.19.0..................................................................................................................... 570 emr-5.18.1..................................................................................................................... 580 emr-5.18.0..................................................................................................................... 589 emr-5.17.2..................................................................................................................... 598 emr-5.17.1..................................................................................................................... 607 iii Amazon EMR Amazon EMR Release Guide emr-5.17.0..................................................................................................................... 616 emr-5.16.1..................................................................................................................... 626 emr-5.16.0..................................................................................................................... 635 emr-5.15.1..................................................................................................................... 644 emr-5.15.0..................................................................................................................... 653 emr-5.14.2..................................................................................................................... 662 emr-5.14.1..................................................................................................................... 671 emr-5.14.0..................................................................................................................... 680 emr-5.13.1..................................................................................................................... 690 emr-5.13.0..................................................................................................................... 698 emr-5.12.3..................................................................................................................... 707 emr-5.12.2..................................................................................................................... 715 emr-5.12.1..................................................................................................................... 724 emr-5.12.0..................................................................................................................... 732 emr-5.11.4..................................................................................................................... 741 emr-5.11.3..................................................................................................................... 750 emr-5.11.2..................................................................................................................... 758 emr-5.11.1..................................................................................................................... 766 emr-5.11.0..................................................................................................................... 775 emr-5.10.1..................................................................................................................... 784 emr-5.10.0..................................................................................................................... 792 emr-5.9.1...................................................................................................................... 801 emr-5.9.0...................................................................................................................... 809 emr-5.8.3...................................................................................................................... 819 emr-5.8.2...................................................................................................................... 827 emr-5.8.1...................................................................................................................... 835 emr-5.8.0...................................................................................................................... 843 emr-5.7.1...................................................................................................................... 852 emr-5.7.0...................................................................................................................... 860 emr-5.6.1...................................................................................................................... 868 emr-5.6.0...................................................................................................................... 877 emr-5.5.4...................................................................................................................... 885 emr-5.5.3...................................................................................................................... 893 emr-5.5.2...................................................................................................................... 901 emr-5.5.1...................................................................................................................... 909 emr-5.5.0...................................................................................................................... 917 emr-5.4.1...................................................................................................................... 926 emr-5.4.0...................................................................................................................... 934 emr-5.3.2...................................................................................................................... 942 emr-5.3.1...................................................................................................................... 950 emr-5.3.0...................................................................................................................... 958 emr-5.2.3...................................................................................................................... 966 emr-5.2.2...................................................................................................................... 974 emr-5.2.1...................................................................................................................... 982 emr-5.2.0...................................................................................................................... 990 emr-5.1.1...................................................................................................................... 999 emr-5.1.0..................................................................................................................... 1006 emr-5.0.3..................................................................................................................... 1015 emr-5.0.0..................................................................................................................... 1022 Amazon EMR 4.x release versions ........................................................................................... 1031 Application versions in Amazon EMR 4.x releases .............................................................. 1032 Release version differences ............................................................................................ 1032 emr-4.9.6..................................................................................................................... 1056 emr-4.9.5..................................................................................................................... 1063 emr-4.9.4..................................................................................................................... 1071 emr-4.9.3..................................................................................................................... 1079 emr-4.9.2..................................................................................................................... 1087 iv Amazon EMR Amazon EMR Release Guide emr-4.9.1..................................................................................................................... 1095 emr-4.8.5..................................................................................................................... 1103 emr-4.8.4..................................................................................................................... 1110 emr-4.8.3..................................................................................................................... 1118 emr-4.8.2..................................................................................................................... 1126 emr-4.8.0..................................................................................................................... 1134 emr-4.7.4..................................................................................................................... 1142 emr-4.7.2..................................................................................................................... 1150 emr-4.7.1..................................................................................................................... 1157 emr-4.7.0..................................................................................................................... 1164 emr-4.6.0..................................................................................................................... 1173 emr-4.5.0..................................................................................................................... 1180 emr-4.4.0..................................................................................................................... 1186 emr-4.3.0..................................................................................................................... 1193 emr-4.2.0..................................................................................................................... 1200 emr-4.1.0..................................................................................................................... 1205 emr-4.0.0..................................................................................................................... 1210 2.x and 3.x AMI versions ........................................................................................................ 1214 Creating a cluster ......................................................................................................... 1215 Installing applications.................................................................................................... 1216 Customizing configurations............................................................................................ 1217 Hive............................................................................................................................ 1221 HBase.......................................................................................................................... 1227 Pig .............................................................................................................................. 1235 Spark.......................................................................................................................... 1238 S3DistCp...................................................................................................................... 1241 What's new?................................................................................................................................. 1243 Approach to mitigate CVE-2021-44228 .................................................................................. 1243 Amazon EMR bootstrap action solution for Log4j CVE-2021-44228 & CVE-2021-45046 .......... 1243 Frequently asked questions............................................................................................ 1248 Amazon EMR 6.9.0 ................................................................................................................ 1249 Amazon EMR 5.36.0 .............................................................................................................. 1251 SigV4 compatibility............................................................................................................... 1254 Archive................................................................................................................................ 1254 Release 6.9.0................................................................................................................ 1249 Release 6.8.0................................................................................................................ 1256 Release 6.7.0................................................................................................................ 1258 Release 6.6.0................................................................................................................ 1261 Release 5.35.0.............................................................................................................. 1264 Release 5.34.0.............................................................................................................. 1267 Release 6.5.0................................................................................................................ 1268 Release 6.4.0................................................................................................................ 1270 Release 5.32.0.............................................................................................................. 1275 Release 6.2.0................................................................................................................ 1278 Release 5.31.0.............................................................................................................. 1283 Release 6.1.0................................................................................................................ 1286 Release 6.0.0................................................................................................................ 1290 Release 5.30.1.............................................................................................................. 1293 Release 5.30.0.............................................................................................................. 1296 Release 5.29.0.............................................................................................................. 1299 Release 5.28.1.............................................................................................................. 1300 Release 5.28.0.............................................................................................................. 1301 Release 5.27.0.............................................................................................................. 1302 Release 5.26.0.............................................................................................................. 1304 Release 5.25.0.............................................................................................................. 1306 Release 5.24.1.............................................................................................................. 1307 Release 5.24.0.............................................................................................................. 1308 v Amazon EMR Amazon EMR Release Guide Release 5.23.0.............................................................................................................. 1309 Release 5.22.0.............................................................................................................. 1311 Release 5.21.1.............................................................................................................. 1313 Release 5.21.0.............................................................................................................. 1313 Release 5.20.0.............................................................................................................. 1315 Release 5.19.0.............................................................................................................. 1317 Release 5.18.0.............................................................................................................. 1318 Release 5.17.1.............................................................................................................. 1319 Release 5.17.0.............................................................................................................. 1319 Release 5.16.0.............................................................................................................. 1320 Release 5.15.0.............................................................................................................. 1321 Release 5.14.1.............................................................................................................. 1322 Release 5.14.0.............................................................................................................. 1322 Release 5.13.0.............................................................................................................. 1323 Release 5.12.2.............................................................................................................. 1324 Release 5.12.1.............................................................................................................. 1324 Release 5.12.0.............................................................................................................. 1324 Release 5.11.3.............................................................................................................. 1325 Release 5.11.2.............................................................................................................. 1325 Release 5.11.1.............................................................................................................. 1326 Release 5.11.0.............................................................................................................. 1326 Release 5.10.0.............................................................................................................. 1327 Release 5.9.0................................................................................................................ 1328 Release 5.8.2................................................................................................................ 1329 Release 5.8.1................................................................................................................ 1330 Release 5.8.0................................................................................................................ 1330 Release 5.7.0................................................................................................................ 1331 Release 5.6.0................................................................................................................ 1332 Release 5.5.3................................................................................................................ 1332 Release 5.5.2................................................................................................................ 1332 Release 5.5.1................................................................................................................ 1333 Release 5.5.0................................................................................................................ 1333 Release 5.4.0................................................................................................................ 1334 Release 5.3.1................................................................................................................ 1335 Release 5.3.0................................................................................................................ 1335 Release 5.2.2................................................................................................................ 1335 Release 5.2.1................................................................................................................ 1335 Release 5.2.0................................................................................................................ 1336 Release 5.1.0................................................................................................................ 1337 Release 5.0.3................................................................................................................ 1337 Release 5.0.0................................................................................................................ 1338 Release 4.9.5................................................................................................................ 1339 Release 4.9.4................................................................................................................ 1339 Release 4.9.3................................................................................................................ 1339 Release 4.9.2................................................................................................................ 1339 Release 4.9.1................................................................................................................ 1340 Release 4.8.4................................................................................................................ 1340 Release 4.8.3................................................................................................................ 1340 Release 4.8.2................................................................................................................ 1341 Release 4.8.0................................................................................................................ 1341 Release 4.7.2................................................................................................................ 1342 Release 4.7.1................................................................................................................ 1342 Release 4.7.0................................................................................................................ 1342 Release 4.6.0................................................................................................................ 1344 Release 4.5.0................................................................................................................ 1345 Release 4.4.0................................................................................................................ 1345 Release 4.3.0................................................................................................................ 1346 vi Amazon EMR Amazon EMR Release Guide Release 4.2.0................................................................................................................ 1347 Configure applications................................................................................................................... 1349 Configure applications when you create a cluster ...................................................................... 1350 Supply a configuration in the console when you create a cluster ......................................... 1351 Supply a configuration using the AWS CLI when you create a cluster ................................... 1351 Supply a configuration using the Java SDK when you create a cluster .................................. 1351 Reconfigure an instance group in a running cluster ................................................................... 1352 Considerations when you reconfigure an instance group .................................................... 1352 Reconfigure an instance group in the console ................................................................... 1354 Reconfigure an instance group using the CLI .................................................................... 1355 Reconfigure an instance group using the Java SDK ............................................................ 1358 Troubleshoot................................................................................................................ 1359 Mask sensitive data ............................................................................................................... 1360 Configure applications to use a specific Java Virtual Machine ...................................................... 1361 Service ports................................................................................................................ 1362 Application users.......................................................................................................... 1363 Checking dependencies using the artifact repository ......................................................................... 1364 EMR File System (EMRFS) .............................................................................................................. 1366 Consistent view.................................................................................................................... 1367 Enable consistent view .................................................................................................. 1370 Understanding how EMRFS consistent view tracks objects in Amazon S3 .............................. 1371 Retry logic................................................................................................................... 1371 EMRFS consistent view metadata.................................................................................... 1372 Configure consistency notifications for CloudWatch and Amazon SQS .................................. 1374 Configure consistent view .............................................................................................. 1375 EMRFS CLI Command Reference ..................................................................................... 1378 Authorizing access to EMRFS data in Amazon S3 ...................................................................... 1385 Creating a custom credentials provider for EMRFS data in Amazon S3 .................................. 1385 Managing the default AWS Security Token Service endpoint ....................................................... 1386 Specifying Amazon S3 encryption using EMRFS properties ......................................................... 1387 Using AWS KMS keys for EMRFS encryption ..................................................................... 1388 Amazon S3 server-side encryption.................................................................................. 1388 Amazon S3 client-side encryption................................................................................... 1390 Delta Lake................................................................................................................................... 1395 Introduction to Delta Lake ..................................................................................................... 1395 Using a cluster with Delta Lake installed .................................................................................. 1395 Using a Delta Lake cluster with Spark ............................................................................. 1395 Use Delta Lake cluster with Spark and AWS Glue .............................................................. 1399 Use Delta Lake cluster with Trino .................................................................................... 1399 Considerations and limitations............................................................................................... 1400 Delta release history ............................................................................................................. 1401 Flink............................................................................................................................................ 1402 Creating a cluster with Flink .................................................................................................. 1403 Configuring Flink.................................................................................................................. 1404 Configuring Flink to Hive Metastore in Amazon EMR ......................................................... 1404 Configuring Flink using a configuration file ...................................................................... 1406 Working with Flink jobs in Amazon EMR .................................................................................. 1408 Start a Flink YARN application as a step on a long-running cluster ...................................... 1409 Submit work to an existing Flink application on a long-running cluster ................................ 1410 Submit a transient Flink job........................................................................................... 1411 Using the Scala shell............................................................................................................. 1412 Finding the Flink web interface .............................................................................................. 1413 Flink release history .............................................................................................................. 1414 Ganglia........................................................................................................................................ 1433 Create a cluster with Ganglia ................................................................................................. 1434 View Ganglia metrics............................................................................................................. 1435 Hadoop and Spark metrics in Ganglia...................................................................................... 1435 vii Amazon EMR Amazon EMR Release Guide Ganglia release history .......................................................................................................... 1436 Hadoop....................................................................................................................................... 1460 Configure Hadoop................................................................................................................. 1461 Hadoop daemon configuration settings........................................................................... 1461 Task configuration........................................................................................................ 1528 HDFS configuration....................................................................................................... 1610 Transparent encryption in HDFS on Amazon EMR ..................................................................... 1611 Configuring HDFS transparent encryption........................................................................ 1611 Considerations for HDFS transparent encryption ............................................................... 1613 Hadoop key management server.................................................................................... 1613 HDFS transparent encryption on EMR clusters with multiple master nodes ........................... 1615 Create or run a Hadoop application ........................................................................................ 1616 Build binaries using Amazon EMR ................................................................................... 1617 Process data with streaming .......................................................................................... 1618 Process data with a custom JAR ..................................................................................... 1622 Turn on non-uniform memory access awareness for YARN containers .......................................... 1624 Hadoop version history ......................................................................................................... 1625 Hadoop release notes by version .................................................................................... 1649 HBase.......................................................................................................................................... 1652 Creating a cluster with HBase ................................................................................................. 1654 Creating a cluster with HBase using the console ............................................................... 1654 Creating a cluster with HBase using the AWS CLI .............................................................. 1654 HBase on Amazon S3 (Amazon S3 storage mode) ..................................................................... 1655 Enabling HBase on Amazon S3 ....................................................................................... 1656 Using a read-replica cluster ............................................................................................ 1656 Persistent HFile tracking ................................................................................................ 1657 Operational considerations............................................................................................. 1658 Using the HBase shell........................................................................................................... 1661 Create a table.............................................................................................................. 1661 Put a value.................................................................................................................. 1661 Get a value.................................................................................................................. 1661 Delete a table.............................................................................................................. 1661 Access HBase tables with Hive ................................................................................................ 1662 Using HBase snapshots.......................................................................................................... 1663 Create a snapshot using a table...................................................................................... 1663 Delete a snapshot......................................................................................................... 1663 View snapshot info....................................................................................................... 1663 Export a snapshot to Amazon S3.................................................................................... 1663 Import snapshot from Amazon S3 .................................................................................. 1664 Restore a table from snapshots within the HBase shell ...................................................... 1664 Configure HBase................................................................................................................... 1665 Changes to memory allocation in YARN ........................................................................... 1666 HBase port numbers ..................................................................................................... 1666 HBase site settings to optimize...................................................................................... 1667 View the HBase user interface ................................................................................................ 1668 View HBase log files............................................................................................................. 1669 Monitor HBase with Ganglia................................................................................................... 1670 Migrating from previous HBase versions .................................................................................. 1671 HBase release history ............................................................................................................ 1671 HCatalog..................................................................................................................................... 1710 Creating a cluster with HCatalog ............................................................................................ 1711 Using HCatalog.................................................................................................................... 1711 Disable direct write when using HCatalog HStorer ............................................................ 1711 Create a table using the HCat CLI and use that data in Pig ................................................. 1712 Accessing the table using Spark SQL ............................................................................... 1713 Example: Create an HCatalog table and write to it using Pig ....................................................... 1714 HCatalog release history ........................................................................................................ 1714 viii Amazon EMR Amazon EMR Release Guide Hive............................................................................................................................................ 1744 Differences and considerations for Hive on Amazon EMR ........................................................... 1745 Differences between Apache Hive on Amazon EMR and Apache Hive ................................... 1745 Differences in Hive between Amazon EMR release version 4.x and 5.x .................................. 1746 Additional features of Hive on Amazon EMR .................................................................... 1746 Configure an external metastore for Hive ................................................................................ 1750 Using the AWS Glue Data Catalog as the metastore for Hive .............................................. 1751 Using an external MySQL database or Amazon Aurora ....................................................... 1755 Use the Hive JDBC driver ....................................................................................................... 1757 Improve Hive performance ..................................................................................................... 1758 Enabling Hive EMRFS S3 optimized committer ................................................................. 1759 Using S3 Select ............................................................................................................ 1759 MSCK Optimization....................................................................................................... 1761 Use Hive LLAP ...................................................................................................................... 1762 Enable LLAP................................................................................................................. 1762 Start LLAP on your cluster ............................................................................................. 1763 Check LLAP status........................................................................................................ 1763 Start or stop LLAP ........................................................................................................ 1763 Resize LLAP daemon count ............................................................................................ 1763 Encryption in Hive ................................................................................................................ 1764 Parquet modular encryption in Hive ................................................................................ 1764 In-transit encryption in HS2........................................................................................... 1766 Hive release history .............................................................................................................. 1767 Hive release notes by version......................................................................................... 1805 Hudi............................................................................................................................................ 1832 How Hudi works ................................................................................................................... 1833 Understanding dataset storage types: Copy on write vs. merge on read ................................ 1833 Registering a Hudi dataset with your metastore ................................................................ 1834 Considerations and limitations............................................................................................... 1834 Create a cluster with Hudi installed ......................................................................................... 1835 Work with a Hudi dataset ...................................................................................................... 1836 Initialize a Spark session for Hudi ................................................................................... 1837 Write to a Hudi dataset ................................................................................................. 1837 Upsert data.................................................................................................................. 1840 Delete a record ............................................................................................................. 1841 Read from a Hudi dataset .............................................................................................. 1841 Use the Hudi CLI.................................................................................................................. 1842 Hudi release history .............................................................................................................. 1843 Hue............................................................................................................................................. 1845 Supported and unsupported features of Hue on Amazon EMR .................................................... 1846 Connecting to the Hue web user interface ............................................................................... 1846 Using Hue with a remote database in Amazon RDS ................................................................... 1847 Troubleshooting............................................................................................................ 1848 Advanced configurations for Hue ............................................................................................ 1848 Configure Hue for LDAP users ........................................................................................ 1849 Hue release history ............................................................................................................... 1851 Iceberg ........................................................................................................................................ 1875 How Iceberg works ............................................................................................................... 1875 Use a cluster with Iceberg ...................................................................................................... 1877 Use an Iceberg cluster with Spark ................................................................................... 1877 Use an Iceberg cluster with Trino .................................................................................... 1880 Considerations and limitations............................................................................................... 1882 Iceberg release history .......................................................................................................... 1882 Iceberg release notes by version ..................................................................................... 1882 Jupyter Notebook......................................................................................................................... 1884 EMR Studio.......................................................................................................................... 1884 EMR Notebook..................................................................................................................... 1884 ix Amazon EMR Amazon EMR Release Guide JupyterHub.......................................................................................................................... 1884 Create a cluster with JupyterHub .................................................................................... 1887 Considerations when using JupyterHub on Amazon EMR .................................................... 1888 Configuring JupyterHub................................................................................................. 1888 Configuring persistence for notebooks in Amazon S3 ........................................................ 1889 Connecting to the master node and Notebook servers ....................................................... 1890 JupyterHub configuration and administration ................................................................... 1890 Adding Jupyter Notebook users and administrators ........................................................... 1891 Installing additional kernels and libraries......................................................................... 1899 JupyterHub release history ............................................................................................ 1901 Livy............................................................................................................................................. 1917 Enabling HTTPS.................................................................................................................... 1918 Livy release history ............................................................................................................... 1919 MXNet......................................................................................................................................... 1938 MXNet release history ........................................................................................................... 1939 Oozie.......................................................................................................................................... 1953 Using Oozie with a remote database in Amazon RDS ................................................................. 1954 Oozie release history ............................................................................................................. 1955 Phoenix....................................................................................................................................... 1981 Creating a cluster with Phoenix .............................................................................................. 1982 Customizing Phoenix configurations ................................................................................ 1983 Phoenix clients..................................................................................................................... 1983 Phoenix release history .......................................................................................................... 1986 Pig.............................................................................................................................................. 2024 Submit Pig work ................................................................................................................... 2025 Submit Pig work using the Amazon EMR console .............................................................. 2025 Submit Pig work using the AWS CLI ................................................................................ 2026 Call user-defined functions from Pig ....................................................................................... 2027 Call JAR files from Pig ................................................................................................... 2027 Call Python/Jython scripts from Pig ................................................................................ 2027 Pig release history ................................................................................................................ 2028 Presto and Trino ........................................................................................................................... 2057 Using Presto with the AWS Glue Data Catalog .......................................................................... 2058 Specifying AWS Glue Data Catalog as the metastore ......................................................... 2059 IAM permissions........................................................................................................... 1753 Considerations when using AWS Glue Data Catalog ........................................................... 2062 Using S3 Select Pushdown ..................................................................................................... 2063 Is S3 Select Pushdown right for my application? ............................................................... 2063 Considerations and limitations........................................................................................ 2063 Enabling S3 Select Pushdown with PrestoDB or Trino ........................................................ 2063 Adding database connectors .................................................................................................. 2064 Using SSL/TLS and LDAPS ..................................................................................................... 2065 Using LDAP authentication............................................................................................. 2066 Activating Presto strict mode ................................................................................................. 2071 Considerations.............................................................................................................. 2072 Handling Spot Instance loss in Presto ...................................................................................... 2072 Fault-tolerant execution......................................................................................................... 2073 Configuration............................................................................................................... 2073 Exchange Manager........................................................................................................ 2074 Considerations and limitations........................................................................................ 2075 Using Presto automatic scaling with Graceful Decommission ...................................................... 2075 Considerations with Presto on Amazon EMR ............................................................................. 2076 Presto command line executable.................................................................................... 2076 Non-configurable Presto deployment properties ............................................................... 2076 PrestoDB and Trino installation ...................................................................................... 2077 EMRFS and PrestoS3FileSystem configuration.................................................................. 2077 Default setting for end user impersonation ...................................................................... 2078 x