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https://issues.apache.org/jira/browse/HBASE-12891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14379427#comment-14379427
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Stephen Yuan Jiang commented on HBASE-12891:
--------------------------------------------
Attached the V2 patch for master, it attempts to solve the thread-safe issue.
Comparing to V1 patch and addendum, it adds
- parallel execution on replicas ([~churromorales], not sure why you did not
parallelize the execution on replicas in your V1 patch)
- handle the TableInfo.regionsFromMeta traversing on thread-safe
> Parallel execution for Hbck checkRegionConsistency
> --------------------------------------------------
>
> Key: HBASE-12891
> URL: https://issues.apache.org/jira/browse/HBASE-12891
> Project: HBase
> Issue Type: Improvement
> Components: hbck
> Affects Versions: 2.0.0, 0.98.10, 1.1.0
> Reporter: churro morales
> Assignee: churro morales
> Labels: performance, scalability
> Fix For: 2.0.0, 1.1.0, 0.98.13
>
> Attachments: HBASE-12891-v1.patch, HBASE-12891.98.patch,
> HBASE-12891.patch, HBASE-12891.patch, HBASE-12891.v2-master.patch,
> hbase-12891-addendum1.patch
>
>
> We have a lot of regions on our cluster ~500k and noticed that hbck took
> quite some time in checkAndFixConsistency(). [~davelatham] patched our
> cluster to do this check in parallel to speed things up. I'll attach the
> patch.
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