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https://issues.apache.org/jira/browse/HIVE-11948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eugene Koifman updated HIVE-11948:
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Description:
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)
was:at least some operations (or parts of operations) can run at
READ_COMMITTED.
> Investigate TxnHandler and CompactionTxnHandler to see where we can reduce
> transaction isolation level
> ------------------------------------------------------------------------------------------------------
>
> 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
>
> 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)
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