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https://issues.apache.org/jira/browse/TEZ-3701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15988139#comment-15988139
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Harish Jaiprakash commented on TEZ-3701:
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Found another issue, with use of SynchronousQueue. The executor throws rejected
exception if we submit a task, when the number of running tasks has reached the
maximum thread limit.
> UnorderedPartitionedKVWriter does not wait for submitted tasks to finish
> before finalMerge.
> -------------------------------------------------------------------------------------------
>
> Key: TEZ-3701
> URL: https://issues.apache.org/jira/browse/TEZ-3701
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Harish Jaiprakash
> Assignee: Harish Jaiprakash
> Priority: Blocker
>
> UnorderedPartitionedKVWriter add task to the executor, but does not wait for
> them to finish before starting the final merge. This can cause finalMerge to
> fail or write incorrect data.
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