Anoop Sam John
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[HBASE-17484] Add non cached version of OffheapKV for write path
...After running lot of different performance tests for various scenarios and with multi threads we thought that is better to have a version of OffheapKV in write path that does not cache...
, 2017-02-07, 20:07
[HBASE-15204] Try to estimate the cell count for adding into WALEdit
...The write path profiling shows that when we try to add Cells to WALEdits we try to do a lot of Array copy inorder to grow the Arraylist backing the WALEdits. In a simple one min profiling of...
, 2017-01-19, 03:30
[HBASE-17483] Add equals/hashcode for OffheapKeyValue
...OffheapKV does not have the much needed equals/hashcode as in KeyValue. This JIRA is to add that....
, 2017-01-18, 14:42
[HBASE-17223] Make COS#newInstance(ByteOutput, int) as public API.
...This is needed for HBASE-16859 since we need the COS#newInstance(ByteOutput) version to be public to have ByteBuffByteOutput support....
, 2017-01-18, 10:06
[HBASE-17291] Remove ImmutableSegment#getKeyValueScanner
...This is based on a discussion over Anastasia Braginsky's patch. The MemstoreSnapshot uses a KeyValueScanner which actually seems redundant considering we already have a SegmentScanner. The i...
, 2017-01-09, 11:20
[HBASE-17383] Improve log msg when offheap memstore breaches higher water mark
...Currently we get this log2016-12-28 21:11:14,349 INFO [RpcServer.deafult.FPBQ.Fifo.handler=39,queue=9,port=16041] regionserver.MemStoreFlusher: Blocking updates on stobdtserver5,16041,...
, 2016-12-29, 02:53
[HBASE-17355] Create a simplifed version of flush scanner
...Currently we use StoreScanner for performing the flushes which actuallly goes row by row. Probably that is not needed and we could always go ahead with a simple loop in collecting the cells ...
, 2016-12-26, 16:29
[HBASE-17353] Cache famLen in OffheapKeyValue
...WE need to discuss here. Already we had a TODO here. But this comes again after offheap memstore is committed in trunk. Attaching a screenshot to show the impact. True that these changes won...
, 2016-12-21, 07:32
[HBASE-17354] Improve and optimize flush/compaction process
...This could act as a parent JIRA for optimizing flush/compaction in terms of speed,algo and GC generated by these operations. Even if we have offheap memstore there are some places where flus...
, 2016-12-21, 06:46
[HBASE-17333] HBASE-17294 always ensures CompactingMemstore is default
...Was the purpose of HBASE-17294 is to make Compacting Memstore as default? Am not sure on that. But that patch makes DefaultMemstore as a Noop. This JIRA is to discuss and revert back to defa...
, 2016-12-20, 11:19
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