Steve Loughran created SPARK-20886:
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Summary: HadoopMapReduceCommitProtocol to fail with message if
FileOutputCommitter.getWorkPath==null
Key: SPARK-20886
URL: https://issues.apache.org/jira/browse/SPARK-20886
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 2.3.0
Reporter: Steve Loughran
Priority: Trivial
This is minor, and the root cause is my fault *elsewhere*, but its the patch I
used to track down the problem.
If {{HadoopMapReduceCommitProtocol}} has a {{FileOutputCommitter}} for
committing things, and *somehow* that's been configured with a
{{JobAttemptContext}}, not a {{TaskAttemptContext}}, then the committer NPEs.
A {{require()}} statement can validate the working path and so point the blame
at whoever's code is confused.
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