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From "Eugene Koifman (JIRA)" <>
Subject [jira] [Updated] (HIVE-15920) Implement a blocking version of a command to compact
Date Thu, 02 Mar 2017 22:10:46 GMT


Eugene Koifman updated HIVE-15920:
    Attachment: HIVE-15920.01.patch

> Implement a blocking version of a command to compact
> ----------------------------------------------------
>                 Key: HIVE-15920
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Transactions
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>         Attachments: HIVE-15920.01.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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