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https://issues.apache.org/jira/browse/SPARK-8985?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-8985.
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Resolution: Incomplete
> Create a test harness to improve Spark's combinatorial test coverage of
> non-default configurations
> --------------------------------------------------------------------------------------------------
>
> Key: SPARK-8985
> URL: https://issues.apache.org/jira/browse/SPARK-8985
> Project: Spark
> Issue Type: Bug
> Components: Tests
> Reporter: Josh Rosen
> Priority: Major
> Labels: bulk-closed
>
> Large numbers of Spark bugs could be caught by running a trivial set of
> end-to-end tests with a non-standard SparkConf configuration.
> This ticket exists to assemble a list of such bugs and the configurations
> which would have caught them. I think that we should build a separate
> Jenkins harness which runs end-to-end tests across a huge configuration
> matrix in order to detect these issues. If the test configuration matrix
> grows to be too large to be tested daily, then we can explore combinatorial
> testing approaches to test fewer configurations while still achieving a high
> level of combinatorial coverage.
> **Bugs listed in order of the test configurations which would have caught
> them:**
> * spark.python.worker.reuse=false:
> ** SPARK-8976
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