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Posted to dev@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2018/02/28 00:36:00 UTC
[jira] [Reopened] (HBASE-19989) READY_TO_MERGE and READY_TO_SPLIT
do not update region state correctly
[ https://issues.apache.org/jira/browse/HBASE-19989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Purtell reopened HBASE-19989:
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The new tests TestZKLessMergeOnCluster and TestZKLessSplitOnCluster consistently fail for me on branch-1.3 and branch-1.4.
{code}
java.lang.RuntimeException: org.apache.hadoop.hbase.exceptions.DeserializationException: Missing pb magic PBUF prefix
{code}
> READY_TO_MERGE and READY_TO_SPLIT do not update region state correctly
> ----------------------------------------------------------------------
>
> Key: HBASE-19989
> URL: https://issues.apache.org/jira/browse/HBASE-19989
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.3.1, 1.4.1
> Reporter: Ben Lau
> Assignee: Ben Lau
> Priority: Major
> Fix For: 1.3.2, 1.5.0, 1.4.3
>
> Attachments: HBASE-19989-branch-1.patch
>
>
> Region state transitions do not work correctly for READY_TO_MERGE/SPLIT. [~thiruvel] and I noticed this is due to break statements being in the wrong place in AssignmentManager. This allows a race condition for example in which one of the regions being merged could be moved concurrently, resulting in the merge transaction failing and then double assignment and/or dataloss. This bug appears to only affect branch-1 (for example 1.3 and 1.4) and not branch-2 as the relevant code in AM has since been rewritten.
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