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https://issues.apache.org/jira/browse/SPARK-14113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-14113:
------------------------------------
Assignee: (was: Apache Spark)
> Consider marking JobConf closure-cleaning in HadoopRDD as optional
> ------------------------------------------------------------------
>
> Key: SPARK-14113
> URL: https://issues.apache.org/jira/browse/SPARK-14113
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Rajesh Balamohan
> Priority: Minor
>
> In HadoopRDD, the following code was introduced as a part of SPARK-6943.
> {noformat}
> if (initLocalJobConfFuncOpt.isDefined) {
> sparkContext.clean(initLocalJobConfFuncOpt.get)
> }
> {noformat}
> When working on one of the changes in OrcRelation, I tried passing
> initLocalJobConfFuncOpt to HadoopRDD and that incurred good performance
> penalty (due to closure cleaning) with large RDDs. This would be invoked for
> every HadoopRDD initialization causing the bottleneck.
> example threadstack is given below
> {noformat}
> at org.apache.xbean.asm5.ClassReader.a(Unknown Source)
> at org.apache.xbean.asm5.ClassReader.readUTF8(Unknown Source)
> at org.apache.xbean.asm5.ClassReader.a(Unknown Source)
> at org.apache.xbean.asm5.ClassReader.accept(Unknown Source)
> at org.apache.xbean.asm5.ClassReader.accept(Unknown Source)
> at
> org.apache.spark.util.FieldAccessFinder$$anon$3$$anonfun$visitMethodInsn$2.apply(ClosureCleaner.scala:402)
> at
> org.apache.spark.util.FieldAccessFinder$$anon$3$$anonfun$visitMethodInsn$2.apply(ClosureCleaner.scala:390)
> at
> scala.collection.TraversableLike$WithFilter$$anonfun$foreach$1.apply(TraversableLike.scala:772)
> at
> scala.collection.mutable.HashMap$$anon$1$$anonfun$foreach$2.apply(HashMap.scala:102)
> at
> scala.collection.mutable.HashMap$$anon$1$$anonfun$foreach$2.apply(HashMap.scala:102)
> at
> scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:226)
> at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:39)
> at scala.collection.mutable.HashMap$$anon$1.foreach(HashMap.scala:102)
> at
> scala.collection.TraversableLike$WithFilter.foreach(TraversableLike.scala:771)
> at
> org.apache.spark.util.FieldAccessFinder$$anon$3.visitMethodInsn(ClosureCleaner.scala:390)
> at org.apache.xbean.asm5.ClassReader.a(Unknown Source)
> at org.apache.xbean.asm5.ClassReader.b(Unknown Source)
> at org.apache.xbean.asm5.ClassReader.accept(Unknown Source)
> at org.apache.xbean.asm5.ClassReader.accept(Unknown Source)
> at
> org.apache.spark.util.ClosureCleaner$$anonfun$org$apache$spark$util$ClosureCleaner$$clean$15.apply(ClosureCleaner.scala:224)
> at
> org.apache.spark.util.ClosureCleaner$$anonfun$org$apache$spark$util$ClosureCleaner$$clean$15.apply(ClosureCleaner.scala:223)
> at scala.collection.immutable.List.foreach(List.scala:318)
> at
> org.apache.spark.util.ClosureCleaner$.org$apache$spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:223)
> at
> org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:122)
> at org.apache.spark.SparkContext.clean(SparkContext.scala:2079)
> at
> org.apache.spark.rdd.HadoopRDD.<init>(HadoopRDD.scala:112){noformat}
> Creating this JIRA to explore the possibility of removing it or mark it
> optional.
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