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Posted to issues@spark.apache.org by "Dana Klassen (JIRA)" <ji...@apache.org> on 2015/01/09 02:55:36 UTC
[jira] [Created] (SPARK-5162) Python yarn-cluster mode
Dana Klassen created SPARK-5162:
-----------------------------------
Summary: Python yarn-cluster mode
Key: SPARK-5162
URL: https://issues.apache.org/jira/browse/SPARK-5162
Project: Spark
Issue Type: New Feature
Components: PySpark, YARN
Reporter: Dana Klassen
Running pyspark in yarn is currently limited to ‘yarn-client’ mode. It would be great to be able to submit python applications to the cluster and (just like java classes) have the resource manager setup an AM on any node in the cluster. Does anyone know the issues blocking this feature? I was snooping around with enabling python apps:
Removing the logic stopping python and yarn-cluster from sparkSubmit.scala
...
// The following modes are not supported or applicable
(clusterManager, deployMode) match {
...
case (_, CLUSTER) if args.isPython =>
printErrorAndExit("Cluster deploy mode is currently not supported for python applications.")
...
}
…
and submitting application via:
HADOOP_CONF_DIR={{insert conf dir}} ./bin/spark-submit --master yarn-cluster --num-executors 2 —-py-files {{insert location of egg here}} --executor-cores 1 ../tools/canary.py
Everything looks to run alright, pythonRunner is picked up as main class, resources get setup, yarn client gets launched but falls flat on its face:
2015-01-08 18:48:03,444 INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService: DEBUG: FAILED { {{redacted}}/.sparkStaging/application_1420594669313_4687/canary.py, 1420742868009, FILE, null }, Resource {{redacted}}/.sparkStaging/application_1420594669313_4687/canary.py changed on src filesystem (expected 1420742868009, was 1420742869284
and
2015-01-08 18:48:03,446 INFO org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.LocalizedResource: Resource {{redacted}}/.sparkStaging/application_1420594669313_4687/canary.py(->/data/4/yarn/nm/usercache/klassen/filecache/11/canary.py) transitioned from DOWNLOADING to FAILED
Tracked this down to the apache hadoop code(FSDownload.java line 249) related to container localization of files upon downloading. At this point thought it would be best to raise the issue here and get input.
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