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https://issues.apache.org/jira/browse/HIVE-11388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14696069#comment-14696069
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Eugene Koifman commented on HIVE-11388:
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cc [~vgumashta]

> there should only be 1 Initiator for compactions per Hive installation
> ----------------------------------------------------------------------
>
>                 Key: HIVE-11388
>                 URL: https://issues.apache.org/jira/browse/HIVE-11388
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 1.0.0
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>
> org.apache.hadoop.hive.ql.txn.compactor.Initiator is a thread that runs 
> inside the metastore service to manage compactions of ACID tables.  There 
> should be exactly 1 instance of this thread (even with multiple Thrift 
> services).
> This is documented in 
> https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions#HiveTransactions-Configuration
>  but not enforced.
> Should add enforcement, since more than 1 Initiator could cause concurrent 
> attempts to compact the same table/partition - which will not work.



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