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https://issues.apache.org/jira/browse/HBASE-5682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13244420#comment-13244420
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Lars Hofhansl commented on HBASE-5682:
--------------------------------------
One other strangeness I found is that none of ZKUtil methods actually throw
exceptions. They retry (via RecoverableZooKeeper) and then just log a message
if there is a failure. This is especially annoying with ZooKeeperWatcher,
because there is no way of telling whether the connection succeeded of not from
the outside.
> Allow HConnectionImplementation to recover from ZK connection loss (for 0.94
> only)
> ----------------------------------------------------------------------------------
>
> Key: HBASE-5682
> URL: https://issues.apache.org/jira/browse/HBASE-5682
> Project: HBase
> Issue Type: Improvement
> Components: client
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Priority: Critical
> Fix For: 0.94.0
>
> Attachments: 5682-all-v2.txt, 5682-all-v3.txt, 5682-all.txt,
> 5682-v2.txt, 5682.txt
>
>
> Just realized that without this HBASE-4805 is broken.
> I.e. there's no point keeping a persistent HConnection around if it can be
> rendered permanently unusable if the ZK connection is lost temporarily.
> Note that this is fixed in 0.96 with HBASE-5399 (but that seems to big to
> backport)
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