Jeremy Liu created SPARK-27962:
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             Summary: Propagate subprocess stdout when subprocess exits with 
nonzero status in deploy.RRunner
                 Key: SPARK-27962
                 URL: https://issues.apache.org/jira/browse/SPARK-27962
             Project: Spark
          Issue Type: Improvement
          Components: Deploy, Spark Core
    Affects Versions: 2.4.3
            Reporter: Jeremy Liu


When the R process launched inĀ org.apache.spark.deploy.RRunner terminates with 
a nonzero status code, only the status code is passed on in the 
SparkUserAppException.

Although the subprocess' stdout is continually piped to System.out, it would be 
useful for users without access to the JVM's stdout to also capture the last 
few lines of the R process and pass it along in the exception message.



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