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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4087) HBaseAdmin should perform validation of connection it holds
Date Thu, 14 Jul 2011 15:02:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13065310#comment-13065310
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Ted Yu commented on HBASE-4087:
-------------------------------

If I get +1 vote(s) for version 3, I would check in that fix which would unblock HBASE-4052.

> HBaseAdmin should perform validation of connection it holds
> -----------------------------------------------------------
>
>                 Key: HBASE-4087
>                 URL: https://issues.apache.org/jira/browse/HBASE-4087
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Critical
>             Fix For: 0.92.0
>
>         Attachments: 4087-v2.txt, 4087-v3.txt, 4087.txt
>
>
> Through HBASE-3777, HConnectionManager reuses the connection to HBase servers.
> One challenge, discovered in troubleshooting HBASE-4052, is how we invalidate connection(s)
to server which gets restarted.
> There're at least two ways.
> 1. HConnectionManager utilizes background thread(s) to periodically perform validation
of connections in HBASE_INSTANCES and remove stale connection(s).
> 2. Allow HBaseClient (including HBaseAdmin) to provide feedback to HConnectionManager.
> The solution can be a combination of both of the above.

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