[
https://issues.apache.org/jira/browse/HIVE-11317?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sriharsha Chintalapani updated HIVE-11317:
------------------------------------------
Labels: triage (was: )
> ACID: Improve transaction Abort logic due to timeout
> ----------------------------------------------------
>
> Key: HIVE-11317
> URL: https://issues.apache.org/jira/browse/HIVE-11317
> Project: Hive
> Issue Type: Bug
> Components: Metastore, Transactions
> Affects Versions: 1.0.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Labels: triage
>
> the logic to Abort transactions that have stopped heartbeating is in
> TxnHandler.timeOutTxns()
> This is only called when DbTxnManger.getValidTxns() is called.
> So if there is a lot of txns that need to be timed out and the there are not
> SQL clients talking to the system, there is nothing to abort dead
> transactions, and thus compaction can't clean them up so garbage accumulates
> in the system.
> Also, streaming api doesn't call DbTxnManager at all.
> Need to move this logic into Initiator (or some other metastore side thread).
> Also, make sure it is broken up into multiple small(er) transactions against
> metastore DB.
> Also more timeOutLocks() locks there as well.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
