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https://issues.apache.org/jira/browse/HBASE-8705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13689139#comment-13689139
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ramkrishna.s.vasudevan commented on HBASE-8705:
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Am not able to reproduce this scenario every time. But after seeing the logs
the restart of RS will not solve the problem because the META location is
already unset in the ZK.
I can commit this patch unless objections.
> RS holding META when restarted in a single node setup may hang infinitely
> without META assignment
> -------------------------------------------------------------------------------------------------
>
> Key: HBASE-8705
> URL: https://issues.apache.org/jira/browse/HBASE-8705
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.95.1
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Priority: Minor
> Fix For: 0.98.0
>
> Attachments: HBASE-8705_1.patch, HBASE-8705_2.patch, HBASE-8705.patch
>
>
> This bug may be minor as it likely to happen in a single node setup.
> I restarted the RS holding META. The master tried assigning META using
> MetaSSH. But tried this before the new RS came up.
> So as not region plan is found
> {code}
> if (plan == null) {
> LOG.warn("Unable to determine a plan to assign " + region);
> if (tomActivated){
> this.timeoutMonitor.setAllRegionServersOffline(true);
> } else {
> regionStates.updateRegionState(region,
> RegionState.State.FAILED_OPEN);
> }
> return;
> }
> {code}
> we just return without assigment. And this being the META the small cluster
> just hangs.
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