Re: Testing if an RDD is empty?

2015-01-15 Thread Al M
You can also check rdd.partitions.size. This will be 0 for empty RDDs and 0 for RDDs with data. -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/Testing-if-an-RDD-is-empty-tp1678p21170.html Sent from the Apache Spark User List mailing list archive

Re: Testing if an RDD is empty?

2015-01-15 Thread freedafeng
. This is not big issue, but annoying. Having a cheap solution testing if an RDD is empty would be nice if there is no such thing available now. -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/Testing-if-an-RDD-is-empty-tp1678p21175.html Sent from the Apache Spark User

Re: Testing if an RDD is empty?

2015-01-15 Thread Tobias Pfeiffer
Hi, On Fri, Jan 16, 2015 at 7:31 AM, freedafeng freedaf...@yahoo.com wrote: I myself saw many times that my app threw out exceptions because an empty RDD cannot be saved. This is not big issue, but annoying. Having a cheap solution testing if an RDD is empty would be nice

Re: Testing if an RDD is empty?

2015-01-15 Thread Sean Owen
saw many times that my app threw out exceptions because an empty RDD cannot be saved. This is not big issue, but annoying. Having a cheap solution testing if an RDD is empty would be nice if there is no such thing available now. I think the cheapest you can have is computing at least one