Github user galv commented on a diff in the pull request:
https://github.com/apache/spark/pull/21494#discussion_r193289530
--- Diff: python/pyspark/worker.py ---
@@ -232,6 +236,13 @@ def main(infile, outfile):
shuffle.DiskBytesSpilled = 0
_accumulatorRegistry.clear()
+ if (isBarrier):
--- End diff --
Style: `if (isBarrier):` -> `if isBarrier:`
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