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https://issues.apache.org/jira/browse/SPARK-3431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14233568#comment-14233568
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Nicholas Chammas commented on SPARK-3431:
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[~joshrosen] I tried [that patch you posted earlier
here|https://issues.apache.org/jira/browse/SPARK-3431?focusedCommentId=14168038&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14168038].
It appears to fork a JVM for every individual test (e.g.
{{org.apache.spark.streaming.DurationSuite}}). When I tried it out on Jenkins,
the tests [timed out after 2
hours|https://github.com/apache/spark/pull/3564#issuecomment-65349149].
> Parallelize execution of tests
> ------------------------------
>
> Key: SPARK-3431
> URL: https://issues.apache.org/jira/browse/SPARK-3431
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Reporter: Nicholas Chammas
>
> Running all the tests in {{dev/run-tests}} takes up to 2 hours. A common
> strategy to cut test time down is to parallelize the execution of the tests.
> Doing that may in turn require some prerequisite changes to be made to how
> certain tests run.
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