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https://issues.apache.org/jira/browse/SPARK-6405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Patrick Wendell resolved SPARK-6405.
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Resolution: Fixed
Assignee: Matthew Cheah
> Spark Kryo buffer should be forced to be max. 2GB
> -------------------------------------------------
>
> Key: SPARK-6405
> URL: https://issues.apache.org/jira/browse/SPARK-6405
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 1.3.0
> Reporter: Matt Cheah
> Assignee: Matthew Cheah
> Fix For: 1.4.0
>
>
> Kryo buffers used in serialization are backed by Java byte arrays, which have
> a maximum size of 2GB. However, we blindly set the size without worrying
> about numeric overflow or regards to the maximum array size. We should
> enforce the maximum buffer size to be 2GB and warn the user when they have
> exceeded that amount.
> I'm open to the idea of flat-out failing the initialization of the Spark
> Context if the buffer size is over 2GB, but I'm afraid that could break
> backwards-compatability... although one can argue that the user had incorrect
> buffer sizes in the first place.
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