Github user markgrover commented on a diff in the pull request: https://github.com/apache/spark/pull/14223#discussion_r71030586 --- Diff: core/src/main/scala/org/apache/spark/util/Clock.scala --- @@ -21,7 +21,14 @@ package org.apache.spark.util * An interface to represent clocks, so that they can be mocked out in unit tests. */ private[spark] trait Clock { + /** @return the time in milliseconds */ def getTimeMillis(): Long + + /** + * Wait until a clock's view of current time reaches the specified target time. + * @param targetTime block until the current time is at least this value --- End diff -- Will do
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