[jira] [Work logged] (HIVE-25846) Ensure that deregistering hive servers works, even after zookeeper session expired

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-25846?focusedWorklogId=703727&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-703727 ]

ASF GitHub Bot logged work on HIVE-25846:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 05/Jan/22 04:04
            Start Date: 05/Jan/22 04:04
    Worklog Time Spent: 10m 
      Work Description: JeongDaeKim opened a new pull request #2920:
URL: https://github.com/apache/hive/pull/2920


   
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   To register deregister watcher again, when zookeeper session re-established 
   
   ### Why are the changes needed?
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   After zookeeper session expired, hive servers can not get node-deleted event from zookeeper, even though it registered deregister watcher already. therefore, we can't deregister hive servers since session expiration.
   
   ### Does this PR introduce _any_ user-facing change?
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   No
   
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   A test was added.
   


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 703727)
    Remaining Estimate: 0h
            Time Spent: 10m

> Ensure that deregistering hive servers works, even after zookeeper session expired
> ----------------------------------------------------------------------------------
>
>                 Key: HIVE-25846
>                 URL: https://issues.apache.org/jira/browse/HIVE-25846
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 2.3.8, 3.1.2
>            Reporter: Jeongdae Kim
>            Assignee: Jeongdae Kim
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Zookeeper watchers are one time trigger and when zookeeper session is expired by long gc pause or something, we should add deregister watchers again to get notification.



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