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https://issues.apache.org/jira/browse/HBASE-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064364#comment-13064364
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stack commented on HBASE-4087:
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This issue is ugly. This patch is incomplete no? Any use of connection needs
to catch this undeclared exception and be able to mark it bad with
HConnectionManager. Right?
> HConnectionManager should perform validation of connection it hands out
> -----------------------------------------------------------------------
>
> Key: HBASE-4087
> URL: https://issues.apache.org/jira/browse/HBASE-4087
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
> Priority: Critical
> Fix For: 0.92.0
>
> Attachments: 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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