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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:00:26 UTC

[jira] [Updated] (SPARK-19475) (ML|MLlib).linalg.DenseVector method delegation fails for __neg__

     [ https://issues.apache.org/jira/browse/SPARK-19475?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon updated SPARK-19475:
---------------------------------
    Labels: bulk-closed  (was: )

> (ML|MLlib).linalg.DenseVector method delegation fails for __neg__
> -----------------------------------------------------------------
>
>                 Key: SPARK-19475
>                 URL: https://issues.apache.org/jira/browse/SPARK-19475
>             Project: Spark
>          Issue Type: Bug
>          Components: ML, MLlib, PySpark
>    Affects Versions: 2.0.0, 2.1.0, 2.2.0
>            Reporter: Maciej Szymkiewicz
>            Priority: Minor
>              Labels: bulk-closed
>
> {{(ML|MLlib).linalg.DenseVector}} delegate number of methods to NumPy. By design [it does the same|https://github.com/apache/spark/blob/933a6548d423cf17448207a99299cf36fc1a95f6/python/pyspark/mllib/linalg/__init__.py#L487] for {{__neg__}} but current {{_delegate}} method [expects binary operators|https://github.com/apache/spark/blob/933a6548d423cf17448207a99299cf36fc1a95f6/python/pyspark/mllib/linalg/__init__.py#L481].
> {code}
> Welcome to
>       ____              __
>      / __/__  ___ _____/ /__
>     _\ \/ _ \/ _ `/ __/  '_/
>    /__ / .__/\_,_/_/ /_/\_\   version 2.1.0
>       /_/
> Using Python version 3.5.2 (default, Jul  2 2016 17:53:06)
> SparkSession available as 'spark'.
> In [1]: from pyspark.ml import linalg
> In [2]: -linalg.DenseVector([1, 2, 3])
> ---------------------------------------------------------------------------
> TypeError                                 Traceback (most recent call last)
> <ipython-input-2-737fe2c5dfd8> in <module>()
> ----> 1 -linalg.DenseVector([1, 2, 3])
> TypeError: func() missing 1 required positional argument: 'other'
> {code}



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