[jira] [Created] (HBASE-8127) Region of a disabling or disabled table could be stucked in transition state when RS dies during Master initialization

["Jeffrey Zhong (JIRA)" <ji...@apache.org>]

Jeffrey Zhong created HBASE-8127:
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             Summary: Region of a disabling or disabled table could be stucked in transition state when RS dies during Master initialization
                 Key: HBASE-8127
                 URL: https://issues.apache.org/jira/browse/HBASE-8127
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.94.5
            Reporter: Jeffrey Zhong
            Assignee: Jeffrey Zhong


The issue happens when a RS dies during a master starts up. After the RS reports open to the new master instance and dies immediately thereafter, the RITs of disabling tables(or disabled table) on the died RS will be in RIT state forever.

I attached a patch to simulate the situation and you can run the following command to reproduce the issue:

{code}mvn test -PlocalTests -Dtest=TestMasterFailover#testMasterFailoverWithMockedRITOnDeadRS{code}

Basically, we skip regions of a dead server inside AM.processDeadServersAndRecoverLostRegions as the following code and relies on SSH to process those skipped regions:
{code}
          for (Pair<HRegionInfo, Result> deadRegion : deadServer.getValue()) {
            nodes.remove(deadRegion.getFirst().getEncodedName());
          }
{code} 

While in SSH, we skip regions of disabling(or disabled table) again by function processDeadRegion. Finally comes to the issue that RITs of disabling(or disabled table) stuck there forever.
 

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