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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6881) All regionservers are marked offline even there is still one up
Date Thu, 27 Sep 2012 04:11:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13464406#comment-13464406
] 

ramkrishna.s.vasudevan commented on HBASE-6881:
-----------------------------------------------

@Jimmy
I typed my comment yesterday but i think it got lost due to some reasons.
In HBASE-6438 we tried to handle the scenario where the region that is slow in processing
could transition the node to OPENING and handleREgion could update the memory state to OPENING
just after the assign retry as changed the state to OFFLINE.  This where we tried to handle
HBASE-6438 with some special handling.
Rajesh has commented what i missed out yesterday.
                
> All regionservers are marked offline even there is still one up
> ---------------------------------------------------------------
>
>                 Key: HBASE-6881
>                 URL: https://issues.apache.org/jira/browse/HBASE-6881
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>         Attachments: trunk-6881.patch
>
>
> {noformat}
> +        RegionPlan newPlan = plan;
> +        if (!regionAlreadyInTransitionException) {
> +          // Force a new plan and reassign. Will return null if no servers.
> +          newPlan = getRegionPlan(state, plan.getDestination(), true);
> +        }
> +        if (newPlan == null) {
>            this.timeoutMonitor.setAllRegionServersOffline(true);
>            LOG.warn("Unable to find a viable location to assign region " +
>              state.getRegion().getRegionNameAsString());
> {noformat}
> Here, when newPlan is null, plan.getDestination() could be up actually.

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