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Posted to issues@hive.apache.org by "Wei Zheng (JIRA)" <ji...@apache.org> on 2016/03/04 22:42:40 UTC

[jira] [Assigned] (HIVE-12439) CompactionTxnHandler.markCleaned() and TxnHandler.openTxns() misc improvements

     [ https://issues.apache.org/jira/browse/HIVE-12439?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wei Zheng reassigned HIVE-12439:
--------------------------------

    Assignee: Wei Zheng  (was: Eugene Koifman)

> CompactionTxnHandler.markCleaned() and TxnHandler.openTxns() misc improvements
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-12439
>                 URL: https://issues.apache.org/jira/browse/HIVE-12439
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore, Transactions
>    Affects Versions: 1.0.0
>            Reporter: Eugene Koifman
>            Assignee: Wei Zheng
>
> # add a safeguard to make sure IN clause is not too large; break up by txn id to delete from TXN_COMPONENTS where tc_txnid in ...
> # TxnHandler. openTxns() - use 1 insert with many rows in values() clause, rather than 1 DB roundtrip per row



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