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https://issues.apache.org/jira/browse/ZOOKEEPER-4291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17470182#comment-17470182
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Brent commented on ZOOKEEPER-4291:
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A quick update since I know this ticket was filed forever ago...
I am actively working on this and have a prototype going that seems to greatly
cut down on network calls (and thereby improve performance), but I've still got
a lot of testing and debugging to do.
> ZooInspector has very high latency when operating against remote clusters
> -------------------------------------------------------------------------
>
> Key: ZOOKEEPER-4291
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4291
> Project: ZooKeeper
> Issue Type: Improvement
> Components: contrib
> Affects Versions: 3.6.2, 3.8.0, 3.7.1
> Reporter: Brent
> Priority: Major
>
> The ZooInspector tool performs well when connecting to a Zookeeper cluster on
> the same host it is being run on or to a very close host (network-wise).
> However, when run against a Zookeeper cluster that is remote (such as one
> running in the cloud), the tool exhibits very high latency. In my
> experience, at worst it can takes up to 20-30 seconds between the time a node
> is expanded and the time the UI is updated.
> Upon brief inspection, this seems to be due to network calls to Zookeeper
> being made from the rendering thread (though this is not entirely clear).
> I will (hopefully) be attempting to create a pull request to remedy this
> issue, but I wanted to report it first.
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