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https://issues.apache.org/jira/browse/SPARK-20689?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16004149#comment-16004149
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Apache Spark commented on SPARK-20689:
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User 'felixcheung' has created a pull request for this issue:
https://github.com/apache/spark/pull/17932
> python doctest leaking bucketed table
> -------------------------------------
>
> Key: SPARK-20689
> URL: https://issues.apache.org/jira/browse/SPARK-20689
> Project: Spark
> Issue Type: Bug
> Components: PySpark, SQL
> Affects Versions: 2.3.0
> Reporter: Felix Cheung
> Assignee: Felix Cheung
>
> When trying to address build test failure in SPARK-20661 we discovered some
> tables are unexpectedly left behind causing R tests to fail. While we changed
> the R tests to be more resilient, we investigated further to see what was
> creating those tables.
> It turns out pyspark doctest is calling saveAsTable without ever dropping
> them. Since we have separately python tests for bucketed table, and there is
> not testing of results, there is really no need to run the doctest
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