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https://issues.apache.org/jira/browse/SPARK-21490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-21490:
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Assignee: (was: Apache Spark)
> SparkLauncher may fail to redirect streams
> ------------------------------------------
>
> Key: SPARK-21490
> URL: https://issues.apache.org/jira/browse/SPARK-21490
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.2.0
> Reporter: Marcelo Vanzin
> Priority: Minor
>
> While investigating a different issue, I noticed that the redirection
> handling in SparkLauncher is faulty.
> In the default case or when users use only log redirection, things should
> work fine.
> But if users try to redirect just the stdout of a child process without
> redirecting stderr, the launcher won't detect that and the child process may
> hang because stderr is not being read and its buffer fills up.
> The code should detect these cases and redirect any streams that haven't been
> explicitly redirected by the user.
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