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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-15920) Implement a blocking version of a command to compact
Date Wed, 08 Mar 2017 09:28:38 GMT

     [ https://issues.apache.org/jira/browse/HIVE-15920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lefty Leverenz updated HIVE-15920:
----------------------------------
    Labels: TODOC2.2  (was: )

> Implement a blocking version of a command to compact
> ----------------------------------------------------
>
>                 Key: HIVE-15920
>                 URL: https://issues.apache.org/jira/browse/HIVE-15920
>             Project: Hive
>          Issue Type: Improvement
>          Components: Transactions
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>              Labels: TODOC2.2
>             Fix For: 2.2.0
>
>         Attachments: HIVE-15920.01.patch, HIVE-15920.02.patch
>
>
> currently 
> {noformat}
> alter table AcidTable compact 'major'
> {noformat} 
> is supported which enqueues a msg to compact.
> Would be nice for testing and script building to support 
> {noformat} 
> alter table AcidTable compact 'major' blocking
> {noformat} 
> perhaps another variation is to block until either compaction is done or until cleaning
is finished.
> DDLTask.compact() gets a request id back so it can then just block and wait for it using
some new API
> may also be useful to let users compact all partitions but only if  a separate queue
has been set up for compaction jobs.
> The later is because with a 1M partition table, this may create very many jobs and saturate
the cluster.
> This probably requires HIVE-12376 to make sure the compaction queue does the throttling,
not the number of worker threads



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