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Posted to issues@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2012/10/12 07:39:07 UTC
[jira] [Closed] (HBASE-5927) SSH and DisableTableHandler happening
together does not clear the znode of the region and RIT map.
[ https://issues.apache.org/jira/browse/HBASE-5927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lars Hofhansl closed HBASE-5927.
--------------------------------
> SSH and DisableTableHandler happening together does not clear the znode of the region and RIT map.
> --------------------------------------------------------------------------------------------------
>
> Key: HBASE-5927
> URL: https://issues.apache.org/jira/browse/HBASE-5927
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.92.1, 0.94.1, 0.96.0
> Reporter: Jieshan Bean
> Assignee: rajeshbabu
> Fix For: 0.92.2, 0.94.1, 0.96.0
>
> Attachments: HBASE-5927_94.patch, HBASE-5927_94_v2.patch, HBASE-5927_trunk_2.patch, HBASE-5927_trunk.patch, TestCaseForReProduce.txt
>
>
> A possible exception: If the related regionserver was just killed(But HMaster has not perceived that), then we will get a local exception "Connection reset by peer". If this region belongs to a disabling table. what will happen?
> ServerShutdownHandler will remove this region from AM#regions. So this region is still existing in RIT. TimeoutMonitor will take care of it after it got timeout. Then invoke unassign again. Since this region has been removed from AM#regions, it will return directly due to the below code:
> {code}
> synchronized (this.regions) {
> // Check if this region is currently assigned
> if (!regions.containsKey(region)) {
> LOG.debug("Attempted to unassign region " +
> region.getRegionNameAsString() + " but it is not " +
> "currently assigned anywhere");
> return;
> }
> }
> {code}
> Then it leads to an end-less loop.
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