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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-10414) DenseMatrix gives different hashcode even though equals returns true
Date Wed, 02 Sep 2015 07:02:45 GMT

     [ https://issues.apache.org/jira/browse/SPARK-10414?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-10414:
------------------------------------

    Assignee: Apache Spark

> 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
>            Assignee: Apache Spark
>            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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