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https://issues.apache.org/jira/browse/HBASE-20734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Yu updated HBASE-20734:
---------------------------
Release Note: Previously the recovered.edits directory was under the root
directory. This JIRA moves the recovered.edits directory to be under the
hbase.wal.dir if set. It also adds a check for any recovered.edits found under
the root directory for backwards compatibility. (was: HBASE-20723 moved the
recovered.edits directory to be under the root directory. This JIRA moves the
recovered.edits directory to be under the hbase.wal.dir if set. It also adds a
check for any recovered.edits found under the root directory for backwards
compatibility.)
> Colocate recovered edits directory with hbase.wal.dir
> -----------------------------------------------------
>
> Key: HBASE-20734
> URL: https://issues.apache.org/jira/browse/HBASE-20734
> Project: HBase
> Issue Type: Improvement
> Components: MTTR, Recovery, wal
> Reporter: Ted Yu
> Assignee: Zach York
> Priority: Major
> Fix For: 3.0.0, 1.5.0, 2.2.0, 1.4.8, 2.1.1
>
> Attachments: HBASE-20734.branch-1.001.patch,
> HBASE-20734.branch-1.002.patch, HBASE-20734.branch-1.003.patch,
> HBASE-20734.branch-1.004.patch, HBASE-20734.branch-1.005.patch,
> HBASE-20734.master.001.patch, HBASE-20734.master.002.patch,
> HBASE-20734.master.003.patch, HBASE-20734.master.004.patch,
> HBASE-20734.master.005.patch, HBASE-20734.master.006.patch,
> HBASE-20734.master.007.patch, HBASE-20734.master.008.patch,
> HBASE-20734.master.009.patch, HBASE-20734.master.010.patch,
> HBASE-20734.master.011.patch, HBASE-20734.master.012.patch
>
>
> During investigation of HBASE-20723, I realized that we wouldn't get the best
> performance when hbase.wal.dir is configured to be on different (fast) media
> than hbase rootdir w.r.t. recovered edits since recovered edits directory is
> currently under rootdir.
> Such setup may not result in fast recovery when there is region server
> failover.
> This issue is to find proper (hopefully backward compatible) way in
> colocating recovered edits directory with hbase.wal.dir .
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