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https://issues.apache.org/jira/browse/HBASE-13855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14637801#comment-14637801
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Hudson commented on HBASE-13855:
--------------------------------
FAILURE: Integrated in HBase-TRUNK #6672 (See
[https://builds.apache.org/job/HBase-TRUNK/6672/])
HBASE-13855 Race in multi threaded PartitionedMobCompactor causes NPE.
(Jingcheng) (anoopsamjohn: rev faefb9073f388663df91d0ef2db24b00d6512519)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/compactions/PartitionedMobCompactor.java
> Race in multi threaded PartitionedMobCompactor causes NPE
> ---------------------------------------------------------
>
> Key: HBASE-13855
> URL: https://issues.apache.org/jira/browse/HBASE-13855
> Project: HBase
> Issue Type: Sub-task
> Components: mob
> Affects Versions: hbase-11339
> Reporter: Jingcheng Du
> Assignee: Jingcheng Du
> Priority: Critical
> Fix For: hbase-11339
>
> Attachments: HBASE-13855.diff
>
>
> In PartitionedMobCompactor, mob files are split into partitions, the
> compactions of partitions run in parallel.
> The partitions share the same set of del files. There might be race
> conditions when open readers of del store files in each partition which can
> cause NPE.
> In this patch, we will pre-create the reader for each del store file to avoid
> this issue.
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