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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2016/07/29 20:57:21 UTC

[jira] [Resolved] (SPARK-16688) OpenHashSet.MAX_CAPACITY is always based on Int even when using Long

     [ https://issues.apache.org/jira/browse/SPARK-16688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-16688.
-------------------------------
    Resolution: Won't Fix

> OpenHashSet.MAX_CAPACITY is always based on Int even when using Long
> --------------------------------------------------------------------
>
>                 Key: SPARK-16688
>                 URL: https://issues.apache.org/jira/browse/SPARK-16688
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.6.2, 2.0.0
>            Reporter: Ben McCann
>
> MAX_CAPACITY is hardcoded to a value of 1073741824:
> {code}val MAX_CAPACITY = 1 << 30
>   class LongHasher extends Hasher[Long] {
>     override def hash(o: Long): Int = (o ^ (o >>> 32)).toInt
>   }{code}
> I'd like to stick more than 1B items in my hashmap. Spark's all about big data, right?



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