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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/09/02 09:02:45 UTC
[jira] [Commented] (SPARK-10414) DenseMatrix gives different
hashcode even though equals returns true
[ https://issues.apache.org/jira/browse/SPARK-10414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14726869#comment-14726869 ]
Apache Spark commented on SPARK-10414:
--------------------------------------
User 'vinodkc' has created a pull request for this issue:
https://github.com/apache/spark/pull/8565
> DenseMatrix gives different hashcode even though equals returns true
> --------------------------------------------------------------------
>
> Key: SPARK-10414
> URL: https://issues.apache.org/jira/browse/SPARK-10414
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Reporter: Vinod KC
> Priority: Minor
>
> hashcode implementation in DenseMatrix gives different result for same input
> val dm = Matrices.dense(2, 2, Array(0.0, 1.0, 2.0, 3.0))
> val dm1 = Matrices.dense(2, 2, Array(0.0, 1.0, 2.0, 3.0))
> assert(dm1 === dm) // passed
> assert(dm1.hashCode === dm.hashCode) // Failed
> This violates the hashCode/equals contract.
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