[jira] [Created] (SPARK-22519) ApplicationMaster.cleanupStagingDir() throws NPE when SPARK_YARN_STAGING_DIR env var is not available

["Devaraj K (JIRA)" <ji...@apache.org>]

Devaraj K created SPARK-22519:
---------------------------------

             Summary: ApplicationMaster.cleanupStagingDir() throws NPE when SPARK_YARN_STAGING_DIR env var is not available
                 Key: SPARK-22519
                 URL: https://issues.apache.org/jira/browse/SPARK-22519
             Project: Spark
          Issue Type: Improvement
          Components: YARN
    Affects Versions: 2.2.0
            Reporter: Devaraj K
            Priority: Minor


In the below, the condition checks whether the stagingDirPath is null but stagingDirPath never becomes null. If SPARK_YARN_STAGING_DIR env var is null then it throws NPE while creating the Path.

{code:title=ApplicationMaster.scala|borderStyle=solid}
        stagingDirPath = new Path(System.getenv("SPARK_YARN_STAGING_DIR"))
        if (stagingDirPath == null) {
          logError("Staging directory is null")
          return
        }
{code}


Here we need to check whether the System.getenv("SPARK_YARN_STAGING_DIR") is null or not, not the stagingDirPath.



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