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https://issues.apache.org/jira/browse/SPARK-25982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16782521#comment-16782521
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Sean Owen commented on SPARK-25982:
-----------------------------------
I don't understand this; you're running operations in parallel on purpose, but
expecting one to wait for the other?
> Dataframe write is non blocking in fair scheduling mode
> -------------------------------------------------------
>
> Key: SPARK-25982
> URL: https://issues.apache.org/jira/browse/SPARK-25982
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.3.1
> Reporter: Ramandeep Singh
> Priority: Major
>
> Hi,
> I have noticed that expected behavior of dataframe write operation to block
> is not working in fair scheduling mode.
> Ideally when a dataframe write is occurring and a future is blocking on
> AwaitResult, no other job should be started, but this is not the case. I have
> noticed that other jobs are started when the partitions are being written.
>
> Regards,
> Ramandeep Singh
>
>
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