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Posted to issues@spark.apache.org by "Tathagata Das (JIRA)" <ji...@apache.org> on 2015/07/31 12:39:04 UTC

[jira] [Resolved] (SPARK-8827) pyspark.DStream top method

     [ https://issues.apache.org/jira/browse/SPARK-8827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tathagata Das resolved SPARK-8827.
----------------------------------
    Resolution: Not A Problem

> pyspark.DStream top method
> --------------------------
>
>                 Key: SPARK-8827
>                 URL: https://issues.apache.org/jira/browse/SPARK-8827
>             Project: Spark
>          Issue Type: Improvement
>          Components: PySpark, Streaming
>            Reporter: Emanuele Cesena
>            Priority: Minor
>
> Is there a reason for not having DStream.top?
> Any issues with the following definition?
> {code}
> def topPartition(partition):
>     return sorted(partition, key=lambda p: p[1], reverse=True)[:10]
> def top(counts):
>     return counts.transform(lambda rdd: rdd.mapPartitions(topPartition)
>         .sortBy(lambda p: p[1],ascending=False))
> {code}



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