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Posted to issues@spark.apache.org by "Imran Rashid (JIRA)" <ji...@apache.org> on 2018/10/31 20:45:00 UTC

[jira] [Created] (SPARK-25904) Avoid allocating arrays too large for JVMs

Imran Rashid created SPARK-25904:
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             Summary: Avoid allocating arrays too large for JVMs
                 Key: SPARK-25904
                 URL: https://issues.apache.org/jira/browse/SPARK-25904
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 2.4.0
            Reporter: Imran Rashid


In a few places spark can try to allocate arrays as big as {{Int.MaxValue}}, but thats actually too big for the JVM.  We should consistently use {{ByteArrayMethods.MAX_ROUNDED_ARRAY_LENGTH}} instead.

In some cases this is changing defaults for configs, in some cases its bounds on a config, and others its just improving error msgs for things that still won't work.



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