Al M created SPARK-5270:
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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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