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https://issues.apache.org/jira/browse/TEZ-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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László Bodor updated TEZ-4090:
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Attachment: org.apache.tez.test.TestLocalMode-output.txt
> TezIDCache::getInstance sync lock
> ---------------------------------
>
> Key: TEZ-4090
> URL: https://issues.apache.org/jira/browse/TEZ-4090
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Rajesh Balamohan
> Assignee: László Bodor
> Priority: Minor
> Attachments: org.apache.tez.test.TestLocalMode-output.txt,
> tez-task-id-concurrency.png
>
>
> profiler output shared by [~gopalv].
> Looking at the code, it is not mandatory to have sync on getInstance.
> https://github.com/apache/tez/blob/master/tez-common/src/main/java/org/apache/tez/dag/records/TezID.java#L48
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