[SPARK-23243] [SPARK-20715][CORE][2.2] Fix RDD.repartition() data correctness issue#22382

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bersprockets wants to merge 4 commits intoapache:branch-2.2from

bersprockets:SPARK-23243-2.2

Commits on Sep 7, 2018

[SPARK-23243][CORE][2.2] Fix RDD.repartition() data correctness issue

cloud-fan
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bersprockets
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compilation error
bersprockets
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[SPARK-20715] Store MapStatuses only in MapOutputTracker, not ShuffleMapStage

JoshRosen
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bersprockets
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Commits on Sep 8, 2018

Remove extraneous blank line added during conflict resolution
bersprockets
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