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https://issues.apache.org/jira/browse/HBASE-20878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16554047#comment-16554047
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Hudson commented on HBASE-20878:
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Results for branch branch-2
[build #1020 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1020/]:
(/) *{color:green}+1 overall{color}*
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details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1020//General_Nightly_Build_Report/]
(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1020//JDK8_Nightly_Build_Report_(Hadoop2)/]
(/) {color:green}+1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/1020//JDK8_Nightly_Build_Report_(Hadoop3)/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> Data loss if merging regions while ServerCrashProcedure executing
> -----------------------------------------------------------------
>
> Key: HBASE-20878
> URL: https://issues.apache.org/jira/browse/HBASE-20878
> Project: HBase
> Issue Type: Sub-task
> Components: amv2
> Affects Versions: 3.0.0, 2.1.0, 2.0.1
> Reporter: Allan Yang
> Assignee: Allan Yang
> Priority: Critical
> Fix For: 3.0.0, 2.0.2, 2.2.0, 2.1.1
>
> Attachments: HBASE-20878.branch-2.0.001.patch,
> HBASE-20878.branch-2.0.002.patch, HBASE-20878.branch-2.0.003.patch,
> HBASE-20878.branch-2.0.004.patch, HBASE-20878.branch-2.0.004.patch
>
>
> In MergeTableRegionsProcedure, we close the regions to merge using
> UnassignProcedure. But, if the RS these regions on is crashed, a
> ServerCrashProcedure will execute at the same time. UnassignProcedures will
> be blockd until all logs are split. But since these regions are closed for
> merging, the regions won't open again, the recovered.edit in the region dir
> won't be replay, thus, data will loss.
> I provided a test to repo this case. I seriously doubt Split region procedure
> also has this kind of problem. I will check later
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