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[HBASE-18490] Modifying a table descriptor to enable replicas does not create replica regions - HBase - [issue]
...After creating a table, if we try to modify the table to enable region replication, the new Htable Descriptor is not taken into account and the table is enabled again with default single reg...    Author: ramkrishna.s.vasudevan , 2018-08-01, 06:21
[HBASE-18946] Stochastic load balancer assigns replica regions to the same RS - HBase - [issue]
...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 ...    Author: ramkrishna.s.vasudevan , 2018-08-01, 06:21
[HBASE-19511] Splits causes blocks to be cached again and so such blocks cannot be evicted from bucket cache - HBase - [issue]
...This is because of similar pattern as in took a lot of time to debug this and the reason for TestBlockeEvictionFromClient was flaky due to...    Author: ramkrishna.s.vasudevan , 2018-08-01, 06:21
[HBASE-19977] FileMmapEngine allocation of byte buffers should be synchronized - HBase - [issue]
...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...    Author: ramkrishna.s.vasudevan , 2018-08-01, 06:21
[HBASE-17950] Write the chunkId also as Int instead of long into the first byte of the chunk - HBase - [issue]
...I think some issue happened while updating the patch. The chunkId was converted to int every where but while writing it has been written as a long. Will push a small patch to change it....    Author: ramkrishna.s.vasudevan , 2018-08-01, 06:20
[HBASE-18055] Releasing L2 cache HFileBlocks before shipped() when switching from pread to stream causes result corruption - HBase - [issue]
...In HBASE-17917 tries to switch from pread to stream read when a specific size of bytes are read. So in order to switch over, it closes the existing scanners and creates a new scanners with p...    Author: ramkrishna.s.vasudevan , 2018-08-01, 06:20
[HBASE-19017] [AMv2] EnableTableProcedure is not retaining the assignments - HBase - [issue]
...Found this while working on HBASE-18946. In branch-1.4 when ever we do enable table we try retain assignment. But in branch-2 and trunk the EnableTableProcedure tries to get the location fro...    Author: ramkrishna.s.vasudevan , 2018-08-01, 06:20
[HBASE-20511] Set the scan's read type on the subsequent scan requests - HBase - [issue]
...See discussion in be...    Author: ramkrishna.s.vasudevan , 2018-06-19, 13:53
[HBASE-18300] Implement a Multi TieredBucketCache - HBase - [issue]
...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...    Author: ramkrishna.s.vasudevan , 2018-06-19, 13:34
[HBASE-17267] Add OffheapMemoryTuner - HBase - [issue]
...This JIRA is aimed at tuning the offheap memory. It is not straight forward as we should not cross the available Direct_memory configured.Should include BC and offheap memstore configs....    Author: ramkrishna.s.vasudevan , 2018-06-19, 13:30