The HBase Team is pleased to announce the immediate release of HBase 0.94.15. Download it from your favorite Apache mirror [1]. This release has also been pushed to Apache's maven repository.
All previous 0.92.x and 0.94.x releases can upgraded to 0.94.15 via a rolling upgrade without downtime, intermediary versions can be skipped. 0.94.15 contains 30 fixes and improvements, including some performance fixes: [HBASE-7886] - [replication] hlog zk node will not be deleted if client roll hlog [HBASE-9485] - TableOutputCommitter should implement recovery if we don't want jobs to start from 0 on RM restart [HBASE-9995] - Not stopping ReplicationSink when using custom implementation for the ReplicationSink [HBASE-10014] - HRegion#doMiniBatchMutation rollbacks the memstore even if there is nothing to rollback. [HBASE-10015] - Replace intrinsic locking with explicit locks in StoreScanner [HBASE-10026] - HBaseAdmin#createTable could fail if region splits too fast [HBASE-10046] - Unmonitored HBase service could accumulate Status objects and OOM [HBASE-10057] - TestRestoreFlushSnapshotFromClient and TestRestoreSnapshotFromClient fail to finish occasionally [HBASE-10061] - TableMapReduceUtil.findOrCreateJar calls updateMap(null, ) resulting in thrown NPE [HBASE-10064] - AggregateClient.validateParameters can throw NPE [HBASE-10089] - Metrics intern table names cause eventual permgen OOM in 0.94 [HBASE-10111] - Verify that a snapshot is not corrupted before restoring it [HBASE-10112] - Hbase rest query params for maxVersions and maxValues are not parsed [HBASE-10117] - Avoid synchronization in HRegionScannerImpl.isFilterDone [HBASE-10120] - start-hbase.sh doesn't respect --config in non-distributed mode [HBASE-10179] - HRegionServer underreports readRequestCounts by 1 under certain conditions [HBASE-10181] - HBaseObjectWritable.readObject catches DoNotRetryIOException and wraps it back in a regular IOException [HBASE-9931] - Optional setBatch for CopyTable to copy large rows in batches [HBASE-10001] - Add a coprocessor to help testing the performances without taking into account the i/o [HBASE-10007] - PerformanceEvaluation: Add sampling and latency collection to randomRead test [HBASE-10010] - eliminate the put latency spike on the new log file beginning [HBASE-10048] - Add hlog number metric in regionserver [HBASE-10049] - Small improvments in region_mover.rb [HBASE-10093] - Unregister ReplicationSource metric bean when the replication source thread is terminated [HBASE-9047] - Tool to handle finishing replication when the cluster is offline [HBASE-10119] - Allow HBase coprocessors to clean up when they fail [HBASE-9927] - ReplicationLogCleaner#stop() calls HConnectionManager#deleteConnection() unnecessarily [HBASE-9986] - Incorporate HTTPS support for HBase (0.94 port) [HBASE-10058] - Test for HBASE-9915 (avoid reading index blocks) [HBASE-10189] - Intermittent TestReplicationSyncUpTool failure See also the full release notes [2]. Thanks to everybody who contributed to this release! Yours, The HBase Team 1. http://www.apache.org/dyn/closer.cgi/hbase/ 2. https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753&version=12325559
