You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hbase.apache.org by "Andrew Kyle Purtell (Jira)" <ji...@apache.org> on 2021/10/20 15:46:00 UTC
[jira] [Commented] (HBASE-26383) HBCK incorrectly reports
inconsistencies for recently split regions following a master failover
[ https://issues.apache.org/jira/browse/HBASE-26383?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17431326#comment-17431326 ]
Andrew Kyle Purtell commented on HBASE-26383:
---------------------------------------------
Let me apply the recommended change and, assuming successful review, make a 2.4.8 release to ship it.
> HBCK incorrectly reports inconsistencies for recently split regions following a master failover
> -----------------------------------------------------------------------------------------------
>
> Key: HBASE-26383
> URL: https://issues.apache.org/jira/browse/HBASE-26383
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 2.4.3
> Reporter: Benoit Sigoure
> Assignee: Andrew Kyle Purtell
> Priority: Critical
> Fix For: 2.4.8
>
>
> When a region P splits into A and B, following a master failover the newly active master reports that P is in an inconsistent state. This seems to be a regression introduced in HBASE-25847 (cc [~andrew.purtell@gmail.com]) which changed {{regionInfo.isParentSplit()}} to {{regionState.isSplit()}}. The region state after restart is CLOSED (rather than SPLIT), so both region state and region info should be checked, presumably with {{regionState.isSplit() || regionInfo.isSplit()}}. This situation resolves itself on its own when a major compaction occurs and P is GCed, but having the master incorrectly report inconsistencies is pretty bad. We had a pretty big outage due to a series of operator errors as our SRE team was trying to fix this inconsistency that, in fact, didn't even exist.
> Thanks to Stack for helping look over this issue and Vlad Hanciuta for root causing the bug.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)