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https://issues.apache.org/jira/browse/SPARK-14389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15239687#comment-15239687
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Cheng Lian commented on SPARK-14389:
------------------------------------

Exception thrown by UnsafeRow.copy() inside BNL join doesn't necessarily 
indicate that BNL join ate all the memory. It's possible that other stuff ate 
all the memory, so that BNL join couldn't require enough memory as a victim.


> OOM during BroadcastNestedLoopJoin
> ----------------------------------
>
>                 Key: SPARK-14389
>                 URL: https://issues.apache.org/jira/browse/SPARK-14389
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.6.0
>         Environment: OS: Amazon Linux AMI 2015.09
> EMR: 4.3.0
> Hadoop: Amazon 2.7.1
> Spark 1.6.0
> Ganglia 3.7.2
> Master: m3.xlarge
> Core: m3.xlarge
> m3.xlarge: 4 CPU, 15GB mem, 2x40GB SSD
>            Reporter: Steve Johnston
>         Attachments: jps_command_results.txt, lineitem.tbl, plans.txt, 
> sample_script.py, stdout.txt
>
>
> When executing attached sample_script.py in client mode with a single 
> executor an exception occurs, "java.lang.OutOfMemoryError: Java heap space", 
> during the self join of a small table, TPC-H lineitem generated for a 1M 
> dataset. Also see execution log stdout.txt attached.



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