[ https://issues.apache.org/jira/browse/SPARK-19600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-19600.
-------------------------------
Resolution: Duplicate
Questions go to the mailing list. Don't open duplicate JIRAs to re-ask.
> ArrayIndexOutOfBoundsException in ALS
> -------------------------------------
>
> Key: SPARK-19600
> URL: https://issues.apache.org/jira/browse/SPARK-19600
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Affects Versions: 2.0.1
> Reporter: zhengxiang pan
> Priority: Blocker
>
> Understand issue SPARK-3080 closed, but I don't understand yet what cause the issue:
memory, parallelism, negative userID or product ID?
> I consistently ran into this issue with different set of training set, can you suggest
any area to look at?
> java.lang.ArrayIndexOutOfBoundsException: 221529807
> at org.apache.spark.ml.recommendation.ALS$$anonfun$partitionRatings$1$$anonfun$apply$6.apply(ALS.scala:944)
> at org.apache.spark.ml.recommendation.ALS$$anonfun$partitionRatings$1$$anonfun$apply$6.apply(ALS.scala:940)
> at scala.collection.Iterator$$anon$12.nextCur(Iterator.scala:434)
> at scala.collection.Iterator$$anon$12.hasNext(Iterator.scala:440)
> at scala.collection.Iterator$JoinIterator.hasNext(Iterator.scala:211)
> at org.apache.spark.util.collection.ExternalSorter.insertAll(ExternalSorter.scala:200)
> at org.apache.spark.shuffle.sort.SortShuffleWriter.write(SortShuffleWriter.scala:63)
> at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:79)
> at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:47)
> at org.apache.spark.scheduler.Task.run(Task.scala:86)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
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