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https://issues.apache.org/jira/browse/HBASE-5615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13236464#comment-13236464
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xufeng commented on HBASE-5615:
-------------------------------
reproduce this issue by 0.90
In this issue,META should hold parent region info for long time.So before
test,I delete those code in regionserver class:
{noformat}
public void postOpenDeployTasks(final HRegion r, final CatalogTracker ct,
final boolean daughter)
throws KeeperException, IOException {
// Do checks to see if we need to compact (references or too many files)
/*if (r.hasReferences() || r.hasTooManyStoreFiles()) {
getCompactionRequester().requestCompaction(r,
r.hasReferences()? "Region has references on open" :
"Region has too many store files");
}*/
{noformat}
step1:start cluster that has two master and one regionerver process.
step2:create a table and input some data in it.
step3:split the table by shell.
step4:kill the active master.
step5:after backup master become active one,start another regionserver process.
result:the issue happen
I also test my patch many times and it can work.
> the master never do balance becauseof balance the parent region
> ----------------------------------------------------------------
>
> Key: HBASE-5615
> URL: https://issues.apache.org/jira/browse/HBASE-5615
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.7
> Reporter: xufeng
> Assignee: xufeng
> Priority: Critical
> Attachments: HBASE-5615.patch
>
>
> the master never do balance becauseof when master do rebuildUserRegions()，it
> will add the parent region into AssignmentManager#servers,
> if balancer let the parent region to move,the parent will in RIT forever.thus
> balance will never be executed.
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