Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/4155#discussion_r23724765
--- Diff: core/src/main/scala/org/apache/spark/SparkHadoopWriter.scala ---
@@ -106,18 +107,30 @@ class SparkHadoopWriter(@transient jobConf: JobConf)
val taCtxt = getTaskContext()
val cmtr = getOutputCommitter()
if (cmtr.needsTaskCommit(taCtxt)) {
- try {
- cmtr.commitTask(taCtxt)
- logInfo (taID + ": Committed")
- } catch {
- case e: IOException => {
- logError("Error committing the output of task: " + taID.value, e)
- cmtr.abortTask(taCtxt)
- throw e
+ val outputCommitCoordinator = SparkEnv.get.outputCommitCoordinator
+ val canCommit = outputCommitCoordinator.canCommit(jobID,
+ taID.value.getTaskID().getId(), splitID, attemptID)
+ if (canCommit) {
+ try {
+ cmtr.commitTask(taCtxt)
+ logInfo (s"$taID: Committed")
+ } catch {
+ case e: IOException => {
+ logError("Error committing the output of task: " + taID.value,
e)
+ cmtr.abortTask(taCtxt)
+ throw e
+ }
}
+ } else {
+ val msg: String = s"$taID: Not committed because the driver did
not authorize commit"
+ logInfo(msg)
+ throw new CommitDeniedException(msg, jobID, splitID, attemptID)
}
} else {
- logInfo ("No need to commit output of task: " + taID.value)
+ val msg: String = s"No need to commit output of task" +
+ " because needsTaskCommit=false: ${taID.value}"
+ logInfo(msg)
+ throw new CommitDeniedException(msg, jobID, splitID, attemptID)
--- End diff --
I think if needsTaskCommit=false, we should maintain the old behavior of
not throwing an exception.
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