Myasuka commented on a change in pull request #8693:
URL: https://github.com/apache/flink/pull/8693#discussion_r427197535
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/SubtaskCheckpointCoordinatorImpl.java
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@@ -142,6 +187,13 @@ public void checkpointState(
// We generally try to emit the checkpoint barrier as soon as
possible to not affect downstream
// checkpoint alignments
+ // Step (0): Record the last triggered checkpointId.
+ lastCheckpointId = metadata.getCheckpointId();
Review comment:
`checkpointState` is executed in sync phase of checkpoint on task which
should behave as a strictly increasing order due to the barrier align
mechanism.
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