Michael Malak created SPARK-1817:
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Summary: RDD zip erroneous when partitions do not divide RDD count
Key: SPARK-1817
URL: https://issues.apache.org/jira/browse/SPARK-1817
Project: Spark
Issue Type: Bug
Affects Versions: 0.9.0
Reporter: Michael Malak
Example:
scala> sc.parallelize(1L to 2L,4).zip(sc.parallelize(11 to 12,4)).collect
res1: Array[(Long, Int)] = Array((2,11))
But more generally, it's whenever the number of partitions does not evenly
divide the total number of elements in the RDD.
See https://groups.google.com/forum/#!msg/spark-users/demrmjHFnoc/Ek3ijiXHr2MJ
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