Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20664#discussion_r170271696
--- Diff: core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala ---
@@ -1129,6 +1129,36 @@ class RDDSuite extends SparkFunSuite with
SharedSparkContext {
}.collect()
}
+ test("SPARK-23496: order of input partitions can result in severe skew
in coalesce") {
--- End diff --
this test looks to me as a good candidate for flakiness, since we are are
picking random numbers. Can we set the seed in order to avoid this?
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