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https://issues.apache.org/jira/browse/HIVE-21841?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Bapat reassigned HIVE-21841:
-------------------------------------


> Leader election in HMS to run housekeeping tasks.
> -------------------------------------------------
>
>                 Key: HIVE-21841
>                 URL: https://issues.apache.org/jira/browse/HIVE-21841
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Ashutosh Bapat
>            Assignee: Ashutosh Bapat
>            Priority: Major
>
> HMS performs housekeeping tasks. When there are multiple HMSes we need to 
> have a leader HMS elected which will carry out those housekeeping tasks. 
> These tasks include execution of compaction tasks, auto-discovering 
> partitions for external tables, generation of compaction tasks, repl thread 
> etc.
> Note that, though the code for compaction tasks, auto-discovery of partitions 
> etc. is in Hive, the actual tasks are initiated by an HMS configured to do 
> so. So, leader election is required only for HMS and not for HS2.



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