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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-19752) RSGroupBasedLoadBalancer#getMisplacedRegions() should handle the case where rs group cannot be determined
Date Wed, 10 Jan 2018 15:25:00 GMT
Ted Yu created HBASE-19752:
------------------------------

             Summary: RSGroupBasedLoadBalancer#getMisplacedRegions() should handle the case
where rs group cannot be determined
                 Key: HBASE-19752
                 URL: https://issues.apache.org/jira/browse/HBASE-19752
             Project: HBase
          Issue Type: Bug
            Reporter: Ted Yu
            Assignee: Ted Yu


Observed the following in rs group test output:
{code}
2018-01-10 14:17:23,006 DEBUG [AssignmentThread] rsgroup.RSGroupBasedLoadBalancer(316): Found
misplaced region: hbase:acl,,1515593841277.ecf47ecb7522d7fab40db0a237f973fd. on server: localhost,1,1
found in group: null outside of group: UNKNOWN
{code}
Here is corresponding code:
{code}
      if (assignedServer != null &&
          (info == null || !info.containsServer(assignedServer.getAddress()))) {
        RSGroupInfo otherInfo = null;
        otherInfo = rsGroupInfoManager.getRSGroupOfServer(assignedServer.getAddress());
        LOG.debug("Found misplaced region: " + regionInfo.getRegionNameAsString() +
{code}
As you can see, both info and otherInfo were null.

In this case, the region should not be placed in misplacedRegions.



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