Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/12797#discussion_r61977039
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/TriggerExecutor.scala
---
@@ -65,8 +65,13 @@ case class ProcessingTimeExecutor(processingTime:
ProcessingTime, clock: Clock =
s"${intervalMs} milliseconds, but spent ${realElapsedTimeMs}
milliseconds")
}
- /** Return the next multiple of intervalMs */
+ /**
+ * Returns the start time in milliseconds for the next batch interval,
given the current time.
+ * Note that a batch interval is inclusive with respect to its start
time, and thus calling
+ * `nextBatchTime` with the result of a previous call should return the
next interval. (i.e. given
+ * an interval of `100 ms`, `nextBatchTime(nextBatchTime(0)) = 200`
rather than `0`).
--- End diff --
Oh, right. Sorry for the mistake.
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