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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2018/11/15 15:23:00 UTC

[jira] [Updated] (SPARK-22450) Safely register class for mllib

     [ https://issues.apache.org/jira/browse/SPARK-22450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen updated SPARK-22450:
------------------------------
    Priority: Minor  (was: Major)

> Safely register class for mllib
> -------------------------------
>
>                 Key: SPARK-22450
>                 URL: https://issues.apache.org/jira/browse/SPARK-22450
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 2.2.0
>            Reporter: Xianyang Liu
>            Assignee: Xianyang Liu
>            Priority: Minor
>             Fix For: 2.3.0
>
>
> There are still some algorithms based on mllib, such as KMeans.  For now, many mllib common class (such as: Vector, DenseVector, SparseVector, Matrix, DenseMatrix, SparseMatrix) are not registered in Kryo. So there are some performance issues for those object serialization or deserialization.
> Previously dicussed: https://github.com/apache/spark/pull/19586



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