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https://issues.apache.org/jira/browse/HBASE-20940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16583133#comment-16583133
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Andrew Purtell commented on HBASE-20940:
----------------------------------------
Thanks for the latest patches.
This test failure looks germane:
{noformat}
[ERROR] Tests run: 107, Failures: 0, Errors: 1, Skipped: 0, Time elapsed:
81.343 s <<< FAILURE! - in org.apache.hadoop.hbase.regionserver.TestHRegion
[ERROR] testMerge(org.apache.hadoop.hbase.regionserver.TestHRegion) Time
elapsed: 0.592 s <<< ERROR!
java.io.IOException: Unable to merge regions
testMerge,,1534422923610.9cbd17d09ee3048c65721d90ee02248a. and
testMerge,mdo,1534422923610.3e0185086609af44c9da53f9f1b829bb.
at
org.apache.hadoop.hbase.regionserver.TestHRegion.testMerge(TestHRegion.java:2703)
{noformat}
Let me see if I can reproduce it.
> HStore.cansplit should not allow split to happen if it has references
> ---------------------------------------------------------------------
>
> Key: HBASE-20940
> URL: https://issues.apache.org/jira/browse/HBASE-20940
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.3.2
> Reporter: Vishal Khandelwal
> Assignee: Vishal Khandelwal
> Priority: Major
> Fix For: 3.0.0
>
> Attachments: HBASE-20940.branch-1.3.v1.patch,
> HBASE-20940.branch-1.3.v2.patch, HBASE-20940.branch-1.v1.patch,
> HBASE-20940.branch-1.v2.patch, HBASE-20940.v1.patch, HBASE-20940.v2.patch,
> HBASE-20940.v3.patch, HBASE-20940.v4.patch
>
>
> When split happens and immediately another split happens, it may result into
> a split of a region who still has references to its parent. More details
> about scenario can be found here HBASE-20933
> HStore.hasReferences should check from fs.storefile rather than in memory
> objects.
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