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From "Al M (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-5270) Elegantly check if RDD is empty
Date Thu, 15 Jan 2015 17:17:35 GMT
Al M created SPARK-5270:
---------------------------

             Summary: Elegantly check if RDD is empty
                 Key: SPARK-5270
                 URL: https://issues.apache.org/jira/browse/SPARK-5270
             Project: Spark
          Issue Type: Improvement
    Affects Versions: 1.2.0
         Environment: Centos 6
            Reporter: Al M
            Priority: Trivial


Right now there is no clean way to check if an RDD is empty.  As discussed here: http://apache-spark-user-list.1001560.n3.nabble.com/Testing-if-an-RDD-is-empty-td1678.html#a1679

This is especially a problem when using streams.  Sometimes my batches are huge in one stream,
sometimes i get nothing for hours.  Still I have to run count() to check if there is anything
in the RDD.

I can also run first() and catch the exception; this is neither a clean nor fast solution.

I'd like a method rdd.isEmpty that returns a boolean.



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