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https://issues.apache.org/jira/browse/PIG-5380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Koji Noguchi updated PIG-5380:
------------------------------
    Status: Open  (was: Patch Available)

We haven't seen this issue pop up for a long time.  We will revisit once 0.18 
is released.

> SortedDataBag hitting ConcurrentModificationException or producing incorrect 
> output in a corner-case 
> -----------------------------------------------------------------------------------------------------
>
>                 Key: PIG-5380
>                 URL: https://issues.apache.org/jira/browse/PIG-5380
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Koji Noguchi
>            Assignee: Koji Noguchi
>            Priority: Major
>         Attachments: pig-5380-v01.patch, pig-5380-v02.patch, 
> pig-5380-v03.patch
>
>
> User had a UDF that created large SortedDataBag.  This UDF was failing with 
> {noformat}
> java.util.ConcurrentModificationException
>   at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
>   at java.util.ArrayList$Itr.next(ArrayList.java:851)
>   at 
> org.apache.pig.data.SortedDataBag$SortedDataBagIterator.readFromPriorityQ(SortedDataBag.java:346)
>   at 
> org.apache.pig.data.SortedDataBag$SortedDataBagIterator.next(SortedDataBag.java:322)
>   at 
> org.apache.pig.data.SortedDataBag$SortedDataBagIterator.hasNext(SortedDataBag.java:235)
> {noformat}



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