The HBase Team is pleased to announce the immediate release of HBase 0.94.14.
Download it from your favorite Apache mirror . This release has also been pushed to Apache's maven repository.
All previous 0.92.x and 0.94.x releases can upgraded to 0.94.14 via a rolling upgrade without downtime, intermediary versions can be skipped.
0.94.14 has 31 issues resolved against it, including extended test coverage, as well as some important performance fixes:
[HBASE-9165] - Improvements to addDependencyJars
[HBASE-9138] - getHaseIntegrationTestingUtility() is misspelled
[HBASE-9799] - Change Hadoop 1.2 dependency to 1.2.1
[HBASE-9809] - RegionTooBusyException should provide region name which was too busy
[HBASE-9834] - Minimize byte copies for 'smart' clients
[HBASE-9849] - [REST] Forbidden schema delete in read only mode
[HBASE-9850] - Issues with UI for table compact/split operation completion. After split/compaction operation using UI, the page is not automatically redirecting back using IE8/Firefox.
[HBASE-9865] - Reused WALEdits in replication may cause RegionServers to go OOM
[HBASE-9872] - ModifyTable does not modify the attributes of a newly modified/changed ColumnDescriptor
[HBASE-9890] - MR jobs are not working if started by a delegated user
[HBASE-9902] - Region Server is starting normally even if clock skew is more than default 30 seconds(or any configured). -> Regionserver node time is greater than master node time
[HBASE-9906] - Restore snapshot fails to restore the meta edits sporadically
[HBASE-9915] - Performance: isSeeked() in EncodedScannerV2 always returns false
[HBASE-9952] - Snapshot restore may fail due to NullPointerException
[HBASE-9956] - Remove keyLength cache from KeyValue
[HBASE-9970] - HBase BulkLoad, table is creating with the timestamp key also as a column to the table.
[HBASE-9971] - Port part of HBASE-9958 to 0.94 - change lock scope in locateRegion
[HBASE-9975] - Not starting ReplicationSink when using custom implementation for the ReplicationSink.
[HBASE-9993] - 0.94: HBASE-9865 breaks coprocessor compatibility with WALEdit.
[HBASE-4654] - [replication] Add a check to make sure we don't replicate to ourselves
[HBASE-8438] - Extend bin/hbase to print a "mapreduce classpath"
[HBASE-9715] - Backport -in_memory option support for LoadTestTool from trunk
[HBASE-9831] - 'hbasefsck.numthreads' property isn't passed to hbck via cmdline -D option
[HBASE-9894] - remove the inappropriate assert statement in Store.getSplitPoint()
[HBASE-9963] - Remove the ReentrantReadWriteLock in the MemStore
[HBASE-8397] - improve unit-test coverage of package org.apache.hadoop.hbase.master.metrics (0.94)
[HBASE-8543] - fix coverage org.apache.hadoop.hbase.rest.client
[HBASE-8552] - fix coverage org.apache.hadoop.hbase.rest.filter
[HBASE-8556] - fix coverage org.apache.hadoop.hbase.metrics.histogram
[HBASE-8557] - fix coverage org.apache.hadoop.hbase.rest.metrics
[HBASE-8559] - increase unit-test coverage of package org.apache.hadoop.hbase.coprocessor
Notible are HBASE-9915, which provides a 2x scan performance improvement with block encoders in some cases;
and HBASE-9865, which significantly reduces memory consumption used during cross cluster replication.
See also the full release notes .
Thanks to everybody who contributed to this release!
The HBase Team