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From "Zalzberg, Idan (Agoda)" <Idan.Zalzb...@agoda.com>
Subject RE: unsafe memory access in spark 1.2.1
Date Sun, 01 Mar 2015 16:32:15 GMT
My run time version is:

java version "1.7.0_75"
OpenJDK Runtime Environment (rhel-2.5.4.0.el6_6-x86_64 u75-b13)
OpenJDK 64-Bit Server VM (build 24.75-b04, mixed mode)

Thanks

From: Ted Yu [mailto:yuzhihong@gmail.com]
Sent: Sunday, March 01, 2015 10:18 PM
To: Zalzberg, Idan (Agoda)
Cc: user@spark.apache.org
Subject: Re: unsafe memory access in spark 1.2.1

What Java version are you using ?

Thanks

On Sun, Mar 1, 2015 at 7:03 AM, Zalzberg, Idan (Agoda) <Idan.Zalzberg@agoda.com<mailto:Idan.Zalzberg@agoda.com>>
wrote:
Hi,
I am using spark 1.2.1, sometimes I get these errors sporadically:
Any thought on what could be the cause?

Thanks

2015-02-27 15:08:47 ERROR SparkUncaughtExceptionHandler:96 - Uncaught exception in thread
Thread[Executor task launch worker-25,5,main]
java.lang.InternalError: a fault occurred in a recent unsafe memory access operation in compiled
Java code
                    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1377)
                    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
                    at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:62)
                    at org.apache.spark.serializer.DeserializationStream$$anon$1.getNext(Serializer.scala:133)
                    at org.apache.spark.util.NextIterator.hasNext(NextIterator.scala:71)
                    at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:350)
                    at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:39)
                    at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327)
                    at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327)
                    at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327)
                    at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327)
                    at org.apache.spark.util.collection.ExternalSorter.spillToPartitionFiles(ExternalSorter.scala:365)
                    at org.apache.spark.util.collection.ExternalSorter.insertAll(ExternalSorter.scala:211)
                    at org.apache.spark.shuffle.sort.SortShuffleWriter.write(SortShuffleWriter.scala:63)
                    at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:68)
                    at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
                    at org.apache.spark.scheduler.Task.run(Task.scala:56)
                    at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:200)
                    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
                    at java.lang.Thread.run(Thread.java:745)


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