Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/23065#discussion_r234393870
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/ProcessingTimeExecutorSuite.scala
---
@@ -48,7 +45,7 @@ class ProcessingTimeExecutorSuite extends SparkFunSuite
with TimeLimits {
}
test("trigger timing") {
- val triggerTimes = new ConcurrentHashSet[Int]
+ val triggerTimes = ConcurrentHashMap.newKeySet[Int]()
--- End diff --
Yes, this is the recommended way to get a concurrent Set in the JDK
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