HDFS-12828 - OIV ReverseXML Processor fails with escaped characters.
HDFS-13101 - An fsimage corruption related to snapshots.
HDFS-13709 - Report bad block to NameNode when transfer block encounters EIO exception
HDFS-14148 - HDFS OIV ReverseXML SnapshotSection parser throws exception when there is more than one snapshottable directory.
HDFS-14687 - Standby Namenode does not come out of safemode when EC files are being written.
HDFS-14706 - Checksums are not checked if the block meta file size is less than 7 bytes.
HBASE-19893 - restore_snapshot is broken in master branch when region splits
HBASE-20305 - adding options to skip deletes/puts on target when running SyncTable
HBASE-22169 - Open region failed cause memory leak
HBASE-22539 - WAL corruption due to early DBBs re-use when Durability.ASYNC_WAL is used
HBASE-22617 - Recovered WAL directories not getting cleaned up
HBASE-22690 - Deprecate / Remove OfflineMetaRepair in hbase-2+
HBASE-22759 - Extended grant and revoke audit events with caller info
SPARK-18364 - [YARN] Expose metrics for YarnShuffleService
SPARK-24352 - [CORE][TESTS] De-flake StandaloneDynamicAllocationSuite blacklist test
SPARK-24355 - Spark external shuffle server improvement to better handle block fetch requests.
SPARK-25139 - [SPARK-18406][CORE][2.4] Avoid NonFatals to kill the Executor in PythonRunner
SPARK-25641 - Change the spark.shuffle.server.chunkFetchHandlerThreadsPercent default to 100
SPARK-25642 - [YARN] Adding two new metrics to record the number of registered connections as well as the number of active connections to YARN Shuffle Service
SPARK-25692 - [CORE] Remove static initialization of worker eventLoop handling chunk fetch requests within TransportContext. This fixes ChunkFetchIntegrationSuite as well.
SPARK-26615 - [CORE] Fixing transport server/client resource leaks in the core unittests
SPARK-27021 - [CORE] Cleanup of Netty event loop group for shuffle chunk fetch requests
SPARK-28150 - [CORE][FOLLOW-UP] Don't try to log in when impersonating.
SPARK-28150 - [CORE] Log in user before getting delegation tokens.
SPARK-28261 - [CORE] Fix client reuse test
SPARK-28335 - [DSTREAMS][TEST] DirectKafkaStreamSuite wait for Kafka async commit
SPARK-28584 - [CORE] Fix thread safety issue in blacklist timer, tests