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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11388) Allow ACID Compactor components to run in multiple metastores
Date Thu, 17 Mar 2016 17:01:33 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eugene Koifman updated HIVE-11388:
----------------------------------
    Attachment: HIVE-11388.2.patch

> Allow ACID Compactor components to run in multiple metastores
> -------------------------------------------------------------
>
>                 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
>            Priority: Critical
>         Attachments: HIVE-11388.2.patch, HIVE-11388.patch
>
>
> (this description is no loner accurate; see further comments)
> 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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