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https://issues.apache.org/jira/browse/KUDU-3099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Grant Henke reassigned KUDU-3099:
---------------------------------
Assignee: Waleed Fateem
> KuduBackup/KuduRestore System.exit(0) results in Spark on YARN failure with
> exitCode: 16
> ----------------------------------------------------------------------------------------
>
> Key: KUDU-3099
> URL: https://issues.apache.org/jira/browse/KUDU-3099
> Project: Kudu
> Issue Type: Bug
> Components: backup, spark
> Affects Versions: 1.10.0, 1.11.0
> Reporter: Waleed Fateem
> Assignee: Waleed Fateem
> Priority: Major
>
> When running KuduBackup/KuduRestore the underlying Spark application can fail
> when running on YARN even when the backup/restore tasks complete
> successfully. The following was from the Spark driver log:
> {code:java}
> INFO spark.SparkContext: Submitted application: Kudu Table Backup
> ..
> INFO spark.SparkContext: Starting job: save at KuduBackup.scala:90
> INFO scheduler.DAGScheduler: Got job 0 (save at KuduBackup.scala:90) with 200
> output partitions
> scheduler.DAGScheduler: Final stage: ResultStage 0 (save at
> KuduBackup.scala:90)
> ..
> INFO scheduler.DAGScheduler: Submitting 200 missing tasks from ResultStage 0
> (MapPartitionsRDD[2] at save at KuduBackup.scala:90) (first 15 tasks are for
> partitions Vector(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14))
> INFO cluster.YarnClusterScheduler: Adding task set 0.0 with 200 tasks
> ..
> INFO cluster.YarnClusterScheduler: Removed TaskSet 0.0, whose tasks have all
> completed, from pool
> INFO scheduler.DAGScheduler: Job 0 finished: save at KuduBackup.scala:90,
> took 20.007488 s
> ..
> INFO spark.SparkContext: Invoking stop() from shutdown hook
> ..
> INFO cluster.YarnClusterSchedulerBackend: Shutting down all executors
> ..
> INFO spark.SparkContext: Successfully stopped SparkContext
> INFO yarn.ApplicationMaster: Final app status: FAILED, exitCode: 16, (reason:
> Shutdown hook called before final status was reported.)
> INFO util.ShutdownHookManager: Shutdown hook called{code}
> Spark explicitly added this shutdown hook to catch System.exit() calls and in
> case this occurs before the SparkContext stops then the application status is
> considered a failure:
> [https://github.com/apache/spark/blob/branch-2.3/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala#L299]
> The System.exit() call added as part of KUDU-2787 can cause this race
> condition and that was merged in the 1.10.x and 1.11.x branches.
>
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