[
https://issues.apache.org/jira/browse/TEZ-4147?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
László Bodor reassigned TEZ-4147:
---------------------------------
Assignee: László Bodor
> Reduce NN calls in RecoveryService::handleRecoveryEvent
> -------------------------------------------------------
>
> Key: TEZ-4147
> URL: https://issues.apache.org/jira/browse/TEZ-4147
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: László Bodor
> Priority: Trivial
>
> [https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/dag/history/recovery/RecoveryService.java#L459]
> [https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/dag/history/recovery/RecoveryService.java#L467]
> {{create(overwrite=false)}} already checks for file exists and throws
> relevant exception. It should be possible to reduce
> {{recoveryDirFS.exists(dagFilePath)}} check to help in concurrent job runs
> (e.g 50-100 AM trying to run very short jobs).
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
