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[SPARK-19613][SS][TEST] Random.nextString is not safe for directory namePrefix#21446

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dongjoon-hyun wants to merge 2 commits intoapache:masterapache/spark:masterfrom

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[SPARK-19613][SS][TEST] Random.nextString is not safe for directory namePrefix#21446
dongjoon-hyun wants to merge 2 commits intoapache:masterfrom
dongjoon-hyun:SPARK-19613

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Commits on May 28, 2018

[SPARK-19613][SS][TEST] Random.nextString is not safe for directory namePrefix
dongjoon-hyun
committed
fix
dongjoon-hyun
committed

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