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https://issues.apache.org/jira/browse/HBASE-5320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13200611#comment-13200611
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Lars Hofhansl commented on HBASE-5320:
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I have no concrete plans, yet.
There are simple ideas of
# just letting the client wait it out (blocking the client) or
# just check whether ZK/Master is up, let the app react to that
I am not following why there needs to be another server to determine whether a
service down. Or are you planning to "preannounce" outages through this extra
server? Or to distinguish between an outage and a planned maintenance?
> Create client API to handle HBase maintenance gracefully
> --------------------------------------------------------
>
> Key: HBASE-5320
> URL: https://issues.apache.org/jira/browse/HBASE-5320
> Project: HBase
> Issue Type: Improvement
> Reporter: Mikhail Bautin
> Assignee: Mikhail Bautin
> Priority: Minor
>
> When we do HBase cluster maintenance, we typically have to manually stop or
> disable the client temporarily. It would be nice to have a way for the client
> to find out that HBase in undergoing maintenance through an appropriate API
> and gracefully handle it on its own.
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