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[HBASE-17885] Backport HBASE-15871 to branch-1
...Will try to rebase the branch-1 patch at the earliest. Hope the fix versions are correct....
, 2018-02-14, 23:17
[HBASE-19977] FileMmapEngine allocation of byte buffers should be synchronized
...Recently we have been testing bucket cache with mmap mode. We found that after the multi threading way of allocating the byte buffers for offheap bucket cache, the creation of the mmapped by...
, 2018-02-13, 16:35
[HBASE-18442] Speed up Memstore chunk pool ByteBuffer allocations
...Like in HBASE-17738 we can speed up the allocation of memstore chunk pool's ByteBuffers. 2017-07-24 17:51:09,726 INFO [regionserver/stobdtserver6/10.66.254.41:16020] regionserver.Chunk...
, 2018-01-17, 20:00
[HBASE-19732] Replica regions does not return back the MSLAB chunks to pool
...When we have region replica enabled, we try to replicate the flush markers. In the replica region on receiving the FLUSH_START_MARKER we create a snapshot. On receiving COMMIT_FLUSH_MARKER w...
, 2018-01-15, 20:56
[HBASE-18946] Stochastic load balancer assigns replica regions to the same RS
...Trying out region replica and its assignment I can see that some times the default LB Stocahstic load balancer assigns replica regions to the same RS. This happens when we have 3 RS checked ...
, 2017-12-22, 13:43
[HBASE-18300] Implement a Multi TieredBucketCache
...We did an internal brainstorming to study the feasibility of this. Some of our recent tests on SSDs like Optane shows that they are vastly faster in randomreads and can act as effective cach...
, 2017-12-20, 12:04
[HBASE-19511] Splits causes blocks to be cached again and so such blocks cannot be evicted from bucket cache
...This is because of similar pattern as in https://issues.apache.org/jira/browse/HBASE-8547.It took a lot of time to debug this and the reason for TestBlockeEvictionFromClient was flaky due to...
, 2017-12-14, 19:53
[HBASE-15788] Use Offheap ByteBuffers from BufferPool to read RPC requests.
...Right now, when an RPC request reaches RpcServer, we read the request into an on demand created byte. When it is write request and including many mutations, the request size will be some w...
, 2017-12-14, 11:59
[HBASE-18945] Make a IA.LimitedPrivate interface for CellComparator
...Based on discussions over in HBASE-18826 and HBASE-18183 it is better we expose CellComparator as a public interface so that it could be used in Region/Store interfaces to be exposed to CPs....
, 2017-12-13, 06:10
[HBASE-16890] Analyze the performance of AsyncWAL and fix the same
...Tests reveal that AsyncWAL under load in single node cluster performs slower than the Default WAL. This task is to analyze and see if we could fix it.See some discussions in the tail of JIRA...
, 2017-12-13, 05:55
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