[GitHub] spark pull request: [SPARK-4092] [CORE] Fix InputMetrics for coale...

[ksakellis <gi...@git.apache.org>]

Github user ksakellis commented on the pull request:

    https://github.com/apache/spark/pull/3120#issuecomment-67213648
  
    @kayousterhout The test you pointed out:
    sc.parallelize(1 to 2).saveAsTextFile("file:////tester1")
    val a = sc.textFile("file:////tester1")
    sc.parallelize(1 to 10).saveAsTextFile("file:////tester2")
    val b = sc.textFile("file:////tester2")
    a.cartesian(b)
    b.cartesian(a)
    
    is actually not valid because of how cartesian is implemented. I added a comment to the interleaved reads unit test to describe the reasoning.


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