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Eugene Koifman commented on HIVE-15920: --------------------------------------- The patch implements the basic functionality to create a blocking call. Adding a command to compact the whole partitioned table may be considered later. [~wzheng] could you review? The syntax is alter table T compact 'major' AND WAIT" Perhaps alter table T compact 'major' NOWAIT" should be supported for completeness > 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 > 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 -- This message was sent by Atlassian JIRA (v6.3.15#6346)