MaxGekk commented on issue #20793: [WIP][SPARK-23643] Shrinking the buffer in hashSeed up to size of the seed parameter URL: https://github.com/apache/spark/pull/20793#issuecomment-472613858 @shahidki31 At least it looks strange. `PowerIterationClustering` uses partition number as a seed for `XORShiftRandom`: https://github.com/apache/spark/blob/25bcf59b3b566b77bfc8a40a4f4253b81f340aa4/mllib/src/main/scala/org/apache/spark/mllib/clustering/PowerIterationClustering.scala#L318 and partitions index as well as number of partitions are not controlled, and the test expects some deterministic results. I would disable the test so far. @srowen WDYT?
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