[jira] [Created] (SPARK-22959) Configuration to select the modules for daemon and worker in PySpark

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

Hyukjin Kwon created SPARK-22959:
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             Summary: Configuration to select the modules for daemon and worker in PySpark
                 Key: SPARK-22959
                 URL: https://issues.apache.org/jira/browse/SPARK-22959
             Project: Spark
          Issue Type: Improvement
          Components: PySpark
    Affects Versions: 2.3.0
            Reporter: Hyukjin Kwon


We are now forced to use {{pyspark/daemon.py}} and {{pyspark/worker.py}} in PySpark tests.

This doesn't allow a custom modification for it and it's sometimes hard to debug what happens in Python worker processes.

This is actually related with SPARK-7721 too as somehow Coverage is unable to detect the coverage from {{os.fork}}.

This is also related with SPARK-20368. With this simple workaround, advanced users will be able to do a lot of pluggable supports.



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