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https://issues.apache.org/jira/browse/HBASE-8233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619008#comment-13619008
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Jimmy Xiang commented on HBASE-8233:
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ZK watcher is an alternative. But we don't want too many ZK watchers, which may
have performance impact.
For the ZKTable state specific, the cache should match the znode all the time
since the updates are expected to from the code, not from zkcli. So generally,
a ZK watcher is not needed. If we have a watcher just for this scenario
(HBASE-6469), it may be a waste.
> Poke the cache and let the system reload cached information
> -----------------------------------------------------------
>
> Key: HBASE-8233
> URL: https://issues.apache.org/jira/browse/HBASE-8233
> Project: HBase
> Issue Type: New Feature
> Reporter: Jimmy Xiang
>
> Sometimes, cached information is stale and we don't have a way to get rid of
> it except restarting the server. If we can poke the cache and let the system
> reloads, it will much easier and quicker.
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