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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2017/07/10 06:23:02 UTC
[jira] [Commented] (SPARK-21358) Argument of
repartitionandsortwithinpartitions at pyspark
[ https://issues.apache.org/jira/browse/SPARK-21358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16079909#comment-16079909 ]
Sean Owen commented on SPARK-21358:
-----------------------------------
Good catch, yeah, I'd just remove that final argument. It happens to work now because the value is interpreted as True anyway.
> Argument of repartitionandsortwithinpartitions at pyspark
> ---------------------------------------------------------
>
> Key: SPARK-21358
> URL: https://issues.apache.org/jira/browse/SPARK-21358
> Project: Spark
> Issue Type: Improvement
> Components: Documentation, Examples
> Affects Versions: 2.1.1
> Reporter: chie hayashida
> Priority: Minor
>
> In rdd.py, implementation of repartitionandsortwithinpartitions is below.
> {code}
> def repartitionAndSortWithinPartitions(self, numPartitions=None, partitionFunc=portable_hash,
> ascending=True, keyfunc=lambda x: x):
> {code}
> And at document, there is following sample script.
> {code}
> >>> rdd = sc.parallelize([(0, 5), (3, 8), (2, 6), (0, 8), (3, 8), (1, 3)])
> >>> rdd2 = rdd.repartitionAndSortWithinPartitions(2, lambda x: x % 2, 2)
> {code}
> The third argument (ascending) expected to be boolean, so following script is better, I think.
> {code}
> >>> rdd = sc.parallelize([(0, 5), (3, 8), (2, 6), (0, 8), (3, 8), (1, 3)])
> >>> rdd2 = rdd.repartitionAndSortWithinPartitions(2, lambda x: x % 2, True)
> {code}
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