Github user josephlijia commented on the pull request:
https://github.com/apache/spark/pull/1297#issuecomment-158647538
When we looked up one certain key-value by IndexedRDD, we found that it was
even slower than ordinary RDD. We use 100,0000 keys in our experiment. When we
tested it by IndexedRDDPartition, it was faster than ordinary RDD. I am
expecting your answer. Thanks you.
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