pnowojski commented on a change in pull request #18989:
URL: https://github.com/apache/flink/pull/18989#discussion_r820521747
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File path:
flink-state-backends/flink-statebackend-changelog/src/main/java/org/apache/flink/state/changelog/PeriodicMaterializationManager.java
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@@ -104,7 +105,7 @@ public void start() {
LOG.info("Task {} starts periodic materialization", subtaskName);
- scheduleNextMaterialization();
+ scheduleNextMaterialization(new Random().nextInt((int)
periodicMaterializeDelay));
Review comment:
I think it would be better to have this logic deterministic based on for
example some combination of uid, task id, subtask id, subtask name. It would
make the behaviour less surprisingly to the users. As it is now, for example
due to some unrelated failover, job might start miss behaving due to a random
chance and debugging/reproducing issues might be impossible.
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