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https://issues.apache.org/jira/browse/SPARK-12467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15996936#comment-15996936
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Hyukjin Kwon edited comment on SPARK-12467 at 5/4/17 3:37 PM:
--------------------------------------------------------------
Yea, I do agree with the advantage and the others of your comment. Let's
resolve this.
Please reopen this if anyone feels against this and has a good idea to resolve
this, or believes it is worth breaking backward compatibility. I am resolving
this.
was (Author: hyukjin.kwon):
Yea, I do agree with the advantage and the others of your comment. Let's
resolve this.
Please reopen this anyone feel against this and have a good idea to resolve
this, or believe it is worth breaking backward compatibility. I am resolving
this.
> Get rid of sorting in Row's constructor in pyspark
> --------------------------------------------------
>
> Key: SPARK-12467
> URL: https://issues.apache.org/jira/browse/SPARK-12467
> Project: Spark
> Issue Type: Bug
> Components: PySpark, SQL
> Affects Versions: 1.5.2, 2.2.0
> Reporter: Irakli Machabeli
> Priority: Minor
>
> Current implementation of Row's __new__ sorts columns by name
> First of all there is no obvious reason to sort, second, if one converts
> dataframe to rdd and than back to dataframe, order of column changes. While
> this is not a bug, nevetheless it makes looking at the data really
> inconvenient.
> def __new__(self, *args, **kwargs):
> if args and kwargs:
> raise ValueError("Can not use both args "
> "and kwargs to create Row")
> if args:
> # create row class or objects
> return tuple.__new__(self, args)
> elif kwargs:
> # create row objects
> names = sorted(kwargs.keys()) # just get rid of sorting here!!!
> row = tuple.__new__(self, [kwargs[n] for n in names])
> row.__fields__ = names
> return row
> else:
> raise ValueError("No args or kwargs")
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