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https://issues.apache.org/jira/browse/HBASE-11197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jimmy Xiang resolved HBASE-11197.
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Resolution: Invalid
I think it's an issue in my local patch/branch. Close it as Invalid.
> Region could remain unassigned if regionserver crashes
> ------------------------------------------------------
>
> Key: HBASE-11197
> URL: https://issues.apache.org/jira/browse/HBASE-11197
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
>
> When looking into test failure:
> testVisibilityLabelsOnKillingOfRSContainingLabelsTable
> and find this is what has happened:
> 1. try to assign a region a region server;
> 2. master creates a znode, and send an openRegion request to the rs;
> 3. rs gets the request and sends back a response, then crashed;
> 4. try to assign the region again with forceNewPlan = true;
> 5. since the region is in transition, master tries to close it and get region
> server stopped exception;
> 6. master offlines the region and removes it from transition; but can't
> assign the region since the dead server is not processed;
> 7. now SSH finally kicks in, tries to assign this region again;
> 8. SSH will fail to assign it since the znode is there already.
> We should clean up the znode in force offline a region.
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