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HBase, mail # dev - [ANNOUNCE] HBase 0.94.14 is available for download


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[ANNOUNCE] HBase 0.94.14 is available for download
lars hofhansl 2013-11-26, 06:06
The HBase Team is pleased to announce the immediate release of HBase 0.94.14.
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 0.94.14 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 [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=12325047