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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2018/06/09 04:32:00 UTC

[jira] [Resolved] (HBASE-20483) [PERFORMANCE] Flushing is 2x slower in hbase2.

     [ https://issues.apache.org/jira/browse/HBASE-20483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-20483.
---------------------------
       Resolution: Fixed
    Fix Version/s: 2.0.1

Resolving as fixed by linked issues and others from last few weeks speeding up scanning. Will now go back to the parent issue. See log in https://docs.google.com/document/d/1vZ_k6_pNR1eQxID5u1xFihuPC7FkPaJQW8c4M5eA2AQ/edit#heading=h.uk3egi5a0sqc

> [PERFORMANCE] Flushing is 2x slower in hbase2.
> ----------------------------------------------
>
>                 Key: HBASE-20483
>                 URL: https://issues.apache.org/jira/browse/HBASE-20483
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Performance
>            Reporter: stack
>            Assignee: stack
>            Priority: Major
>             Fix For: 2.0.1
>
>         Attachments: 0001-HBASE-20483-perpertual-flush-and-memstore-fill-branch-2.0.patch, 0001-HBASE-20483-perpetual-flush.branch-1.4.patch, 0001-HBASE-20483-perpetual-flush.branch-1.4.patch, 0001-HBASE-20483-perpetual.tests.patch, 0001-HBASE-20483-perpetual.tests.patch, 0001-Perpetual-flush-memstore-fill-etc.-tools.patch, PerpetualFlushingProgram.patch, PerpetualFlushingProgram1.2.patch, SnapshotSegmentScanner_2.0.0.patch
>
>
> When flush is slow, memstores backup and go slower. See "1.2.7 vs. 2.0.0 Flush History" https://docs.google.com/spreadsheets/d/1sihTxb4aCplR3Rr_GGXkPlwhMIm-CbB9j_5339AS0Zc/edit#gid=1016758826  for compare. First noted by [~anoop.hbase]



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