Devaraj K created SPARK-22519:
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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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