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https://issues.apache.org/jira/browse/SPARK-19913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15905904#comment-15905904
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Apache Spark commented on SPARK-19913:
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User 'sarutak' has created a pull request for this issue:
https://github.com/apache/spark/pull/17252
> Log warning rather than throw AnalysisException when output is partitioned
> although format is memory, console or foreach
> ------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-19913
> URL: https://issues.apache.org/jira/browse/SPARK-19913
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 2.2.0
> Reporter: Kousuke Saruta
> Priority: Minor
>
> When batches are executed with memory, console or foreach format,
> `assertNotPartitioned` will check whether output is not partitioned and throw
> AnalysisException in case it is.
> But I wonder it's better to log warning rather than throw the exception
> because partitioning does not affect output for those formats but also does
> not bring any negative impacts.
> Also, this assertion is not applied when the format is `console`. I think in
> this case too, we should assert that .
> By fixing them, we can easily switch the format to memory or console for
> debug purposes.
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