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https://issues.apache.org/jira/browse/BEAM-10691?focusedWorklogId=470132&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-470132
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ASF GitHub Bot logged work on BEAM-10691:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 13/Aug/20 08:12
Start Date: 13/Aug/20 08:12
Worklog Time Spent: 10m
Work Description: je-ik commented on a change in pull request #12551:
URL: https://github.com/apache/beam/pull/12551#discussion_r469774735
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/wrappers/streaming/DoFnOperator.java
##########
@@ -1277,7 +1280,13 @@ private void onNewEventTimer(TimerData newTimer) {
"Timer with id %s is not an event time timer!",
newTimer.getTimerId());
if (timerUsesOutputTimestamp(newTimer)) {
- outputTimestampQueue.add(newTimer.getOutputTimestamp().getMillis());
+ outputTimestamps.compute(
+ newTimer.getOutputTimestamp().getMillis(),
+ (k, v) -> {
+ Set<String> timerIds = v == null ? new HashSet<>() : v;
+ timerIds.add(getContextTimerId(newTimer.getTimerId(),
newTimer.getNamespace()));
Review comment:
It should not. But in some cases, a timer output timestamp seems to
appear in the queue _twice_ (for the same timer) and removed only _once_, which
causes the pipeline to get stuck.
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Issue Time Tracking
-------------------
Worklog Id: (was: 470132)
Time Spent: 1h 10m (was: 1h)
> FlinkRunner: pipeline might get stuck due to timer watermark hold not being
> released
> ------------------------------------------------------------------------------------
>
> Key: BEAM-10691
> URL: https://issues.apache.org/jira/browse/BEAM-10691
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.23.0, 2.24.0
> Reporter: Jan Lukavský
> Assignee: Jan Lukavský
> Priority: P1
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Pipeline might stop progressing watermark in certain cases due to timer
> output timestamp not being released from
> FlinkTimerInternals#outputTimestampQueue. The pipeline has to be restarted
> from checkpoint to reload the cache and free watermark hold.
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