mxm commented on a change in pull request #12551:
URL: https://github.com/apache/beam/pull/12551#discussion_r470633121
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File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/wrappers/streaming/DoFnOperator.java
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@@ -1226,7 +1227,7 @@ public TimerInternals timerInternals() {
* fire time of the timer. Used for calculating the output watermark hold.
This avoids fetching
* timer data from the state backend which is expensive if done for each
timer.
*/
- private final PriorityQueue<Long> outputTimestampQueue;
+ private final TreeMultiset<Long> outputTimestamps = TreeMultiset.create();
Review comment:
Why would we do this? TreeMap<Long, Integer> seems like the better data
structure because it stores the data compacted.
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