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[HBASE-12148] Remove TimeRangeTracker as point of contention when many threads writing a Store
, 2017-01-10, 02:06
[HBASE-15414] Bound the size of multi request returns and/or allow return of partial result up to client
...Some knowledgeable hbase users note that while Scanning now allows you return results in 'chunks' for assembly client-side as a whole result (or the application can see the partials as they ...
, 2017-01-06, 00:34
[HBASE-17397] AggregationClient cleanup
...AggregationClient is canonical coprocessor endpoint. It has some impurities spotted by Duo Zhang over in HBASE-17346....
, 2017-01-04, 11:10
[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
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