Github user mridulm commented on a diff in the pull request: https://github.com/apache/spark/pull/19294#discussion_r143250260 --- Diff: core/src/main/scala/org/apache/spark/internal/io/HadoopMapReduceCommitProtocol.scala --- @@ -57,6 +60,15 @@ class HadoopMapReduceCommitProtocol(jobId: String, path: String) */ private def absPathStagingDir: Path = new Path(path, "_temporary-" + jobId) + /** + * Checks whether there are files to be committed to an absolute output location. + * + * As the committing and aborting the job occurs on driver where `addedAbsPathFiles` is always + * null, it is necessary to check whether the output path is specified, that may not be the case + * for committers not writing to distributed file systems. --- End diff -- How about : "As committing and aborting a job occurs on driver, where `addedAbsPathFiles` is always null, it is necessary to check whether the output path is specified. Output path need not be relevant for committers not writing to distributed file systems"
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