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https://issues.apache.org/jira/browse/HBASE-21421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16824027#comment-16824027
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Hudson commented on HBASE-21421:
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Results for branch master
[build #954 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/master/954/]: (x)
*{color:red}-1 overall{color}*
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details (if available):
(x) {color:red}-1 general checks{color}
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report|https://builds.apache.org/job/HBase%20Nightly/job/master/954//General_Nightly_Build_Report/]
(x) {color:red}-1 jdk8 hadoop2 checks{color}
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report|https://builds.apache.org/job/HBase%20Nightly/job/master/954//JDK8_Nightly_Build_Report_(Hadoop2)/]
(x) {color:red}-1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
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(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> Do not kill RS if reportOnlineRegions fails
> -------------------------------------------
>
> Key: HBASE-21421
> URL: https://issues.apache.org/jira/browse/HBASE-21421
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 2.1.1, 2.0.2
> Reporter: Allan Yang
> Assignee: Allan Yang
> Priority: Major
> Fix For: 3.0.0, 2.2.0, 2.0.3, 2.1.2
>
> Attachments: HBASE-21421.branch-2.0.001.patch,
> HBASE-21421.branch-2.0.002.patch, HBASE-21421.branch-2.0.003.patch,
> HBASE-21421.branch-2.0.004.patch
>
>
> In the periodic regionServerReport from RS to master, we will call
> master.getAssignmentManager().reportOnlineRegions() to make sure the RS has a
> same state with Master. If RS holds a region which master think should be on
> another RS, the Master will kill the RS.
> But, the regionServerReport could be lagging(due to network or something),
> which can't represent the current state of RegionServer. Besides, we will
> call reportRegionStateTransition and try forever until it successfully
> reported to master when online a region. We can count on
> reportRegionStateTransition calls.
> I have encountered cases that the regions are closed on the RS and
> reportRegionStateTransition to master successfully. But later, a lagging
> regionServerReport tells the master the region is online on the RS(Which is
> not at the moment, this call may generated some time ago and delayed by
> network somehow), the the master think the region should be on another RS,
> and kill the RS, which should not be.
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