[jira] [Resolved] (HBASE-8785) revise zookeeper session timeout setting

["Jean-Daniel Cryans (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-8785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jean-Daniel Cryans resolved HBASE-8785.
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.98.0
         Assignee: Jean-Daniel Cryans  (was: stack)
     Hadoop Flags: Reviewed

Committed to branch and trunk... mmm should I also fix the title since we didn't change the timeout?
                
> revise zookeeper session timeout setting
> ----------------------------------------
>
>                 Key: HBASE-8785
>                 URL: https://issues.apache.org/jira/browse/HBASE-8785
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.95.1
>            Reporter: Sergey Shelukhin
>            Assignee: Jean-Daniel Cryans
>            Priority: Critical
>             Fix For: 0.98.0, 0.95.2
>
>         Attachments: HBASE-8785.patch
>
>
> Current ZK session timeout is set to 90sec., and the comment in the doc says: "This setting becomes zookeeper's 'maxSessionTimeout'". However, this comment is misleading - it doesn't always become maxSessionTimeout, min(our timeout, maxSessionTimeout) is chosen. Moreover, the default maxSessionTimeout in ZK that I'm looking at is 40s, so this setting doesn't do anything.
> Additionally, 40s. seems like a lot of time.
> 1) Should the comment be changed to tell the user to change ZK config if they want higher timeout?
> 2) Should the setting be revised down?

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