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https://issues.apache.org/jira/browse/HIVE-12439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15200685#comment-15200685
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Eugene Koifman commented on HIVE-12439:
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+1 pending test
> 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
> Attachments: HIVE-12439.1.patch, HIVE-12439.2.patch,
> HIVE-12439.3.patch
>
>
> # 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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