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[HBASE-14451] Move on to htrace-4.0.1 (from htrace-3.2.0) and tell a couple of good trace stories
...htrace-4.0.0 was just release with a new API. Get up on it....
, 2017-01-03, 12:08
[HBASE-17160] Undo unnecessary inter-module dependency; spark to hbase-it and hbase-it to shell
...Very minor untangling....
, 2016-12-22, 19:52
[HBASE-17329] Improve message when CallQueueTooBigException
...Print out queue item counts and queue sizes. While here correct queue name spellings....
, 2016-12-17, 02:09
[HBASE-16146] Counters are expensive...
...Doing workloadc, perf shows 10%+ of CPU being spent on counter#add. If I disable some of the hot ones – see patch – I can get 10% more throughput (390k to 440k). Figure something...
, 2016-12-14, 21:55
[HBASE-17277] Allow alternate BufferedMutator implementation
...Allow being able to supply alternate BufferedMutator implementation. For example, the parent issue would like to spool writes to the filesystem if hbase is down....
, 2016-12-14, 12:23
[HBASE-17273] Create an hbase-coprocessor module as repository for generally useful coprocessors
...Idea here is a module where we can carry coprocessors that are of general utility. In particular, I am thinking of the coprocessor used by yarn timeline server v2 which does aggregating and ...
, 2016-12-10, 19:36
[HBASE-17128] Find Cause of a Write Perf Regression in branch-1.2
...As reported by Graham Baecher up on the mailing list, there is a regression in 1.2. The regression is in a CDH version of 1.2 actually but the CDH hbase is a near pure 1.2. This is a working...
, 2016-12-10, 06:23
[HBASE-1935] Scan in parallel
...A scanner that rather than scan in series, instead scanned multiple regions in parallell would be more involved but could complete much faster partiularly if results are sparse....
, 2016-12-09, 00:52
[HBASE-17272] Doc how to run Standalone HBase over an HDFS instance; all daemons in one JVM but persisting to an HDFS instance
...It is possible to run hbase in standalone mode – all daemons in the one JVM (Master+RegionServers+ZooKeeper) – but persisting to HDFS rather than the usual local filesystem. That...
, 2016-12-08, 06:22
[HBASE-17234] Allow alternate Readers/Writers; currently hardcoded
...Allow alternate HFile Reader and Writers. For Writers, we have WriterFactory so you'd think it possible to supply a different Writer but in actuality, WriterFactory is hardcoded.Read side do...
, 2016-12-07, 06:47
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