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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-1673) .META. regionserver died, cluster recovered but not UI
Date Tue, 07 Dec 2010 21:07:12 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-1673.
--------------------------

    Resolution: Invalid

Resolving as invalid.  This HCM stuff has all changed since.

> .META. regionserver died, cluster recovered but not UI
> ------------------------------------------------------
>
>                 Key: HBASE-1673
>                 URL: https://issues.apache.org/jira/browse/HBASE-1673
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>
> Getting 500 in UI:
> {code}
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server
null for region , row '', but failed after 3 attempts.
> Exceptions:
> java.net.ConnectException: Call to /208.76.44.141:60020 failed on connection exception:
java.net.ConnectException: Connection refused
> ...
> {code}
> Doesn't recover.
> I think issue is here in HCM:
> {code}
>         } catch (IOException e) {
>           if (e instanceof RemoteException) {
>             e = RemoteExceptionHandler.decodeRemoteException(
>                 (RemoteException) e);
>           }
>           if (tries < numRetries - 1) {
>             if (LOG.isDebugEnabled()) {
>               LOG.debug("locateRegionInMeta attempt " + tries + " of " +
>                 this.numRetries + " failed; retrying after sleep of " +
>                 getPauseTime(tries), e);
>             }
>             relocateRegion(parentTable, metaKey);
>           } else {
> ...
> {code}
> The call to relocateRegion is going to result in an attempt at finding the .META.,,1
region in .META. which will get a ConnectionException again.
> On ConnectionException, should be backing up and going to -ROOT- to find new location
of .META.

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