[
https://issues.apache.org/jira/browse/HIVE-11948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995462#comment-14995462
]
Eugene Koifman commented on HIVE-11948:
---------------------------------------
[~alangates] could you take a look please?
> Investigate TxnHandler and CompactionTxnHandler to see where we improve
> concurrency
> -----------------------------------------------------------------------------------
>
> Key: HIVE-11948
> URL: https://issues.apache.org/jira/browse/HIVE-11948
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 0.14.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-11948.patch
>
>
> at least some operations (or parts of operations) can run at READ_COMMITTED.
> CompactionTxnHandler.setRunAs()
> CompactionTxnHandler.findNextToCompact()
> if update stmt includes cq_state = '" + INITIATED_STATE + "'" in WHERE clause
> and logic to look for "next" candidate
> CompactionTxnHandler.markCompacted()
> perhaps add cq_state=WORKING_STATE in Where clause (mostly as an extra
> consistency check)
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
