Ted Yu created HBASE-19752:
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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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