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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13576) HBCK enhancement: Failure in checking one region should not fail the entire HBCK operation.
Date Sat, 02 May 2015 20:31:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14525467#comment-14525467

Ted Yu commented on HBASE-13576:

Looks good overall.
1825	    int terminateThreshold =  getConf().getInt("hbase.hbck.skippedregionslimit", 0);
To be consistent with other hbck parameters, please use "hbase.hbck.skipped.regions.limit"
3739	         + (skippedRegions.containsKey(tInfo.getName())? " (with some skipped regions)."
: "."));
Please add the number of skipped regions to above message.

> HBCK enhancement: Failure in checking one region should not fail the entire HBCK operation.
> -------------------------------------------------------------------------------------------
>                 Key: HBASE-13576
>                 URL: https://issues.apache.org/jira/browse/HBASE-13576
>             Project: HBase
>          Issue Type: Bug
>          Components: hbck
>    Affects Versions: 2.0.0, 1.1.0, 1.2.0
>            Reporter: Stephen Yuan Jiang
>            Assignee: Stephen Yuan Jiang
>         Attachments: HBASE-13576.v1-master.patch, HBASE-13576.v2-master.patch
> HBaseFsck#checkRegionConsistency() checks region consistency and repair the corruption
if requested.  However, this function expects some exceptions.  For example, in one aspect
of region repair, it calls HBaseFsckRepair#waitUntilAssigned(), if a region is in transition
for over 120 seconds (default value of "hbase.hbck.assign.timeout" configuration), IOException
would throw.
> The problem is that one exception in checkRegionConsistency() would kill entire hbck
operation, because the exception would propagate up.
> The proposal is that if the region is not META region ( or a system table region if we
prefer),  we can skip the region if  HBaseFsck#checkRegionConsistency() fails.  We could print
out skip regions in summary section so that users know to either re-run or investigate potential
issue for that region. 

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