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https://issues.apache.org/jira/browse/FLINK-39108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18065365#comment-18065365
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Piotr Nowojski commented on FLINK-39108:
----------------------------------------

another instance

{noformat}
Class name
org.apache.flink.test.checkpointing.CheckpointIntervalDuringBacklogITCase
org.opentest4j.AssertionFailedError expected: 0 but was: 1
org.opentest4j.AssertionFailedError: 

expected: 0
 but was: 1
        at 
java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
        at 
java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)
        at 
org.apache.flink.test.checkpointing.CheckpointIntervalDuringBacklogITCase.testNoCheckpointDuringBacklog(CheckpointIntervalDuringBacklogITCase.java:146)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
{noformat}



> CheckpointIntervalDuringBacklog is ignored for the first checkpoint
> -------------------------------------------------------------------
>
>                 Key: FLINK-39108
>                 URL: https://issues.apache.org/jira/browse/FLINK-39108
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Checkpointing
>    Affects Versions: 1.19.0, 1.20.0, 2.2.0
>            Reporter: Roman Khachatryan
>            Priority: Major
>
> After adjusting 
> CheckpointIntervalDuringBacklogITCase.testNoCheckpointDuringBacklog, it fails 
> reliably because at least the first checkpoint is triggered regardless of the 
> configured checkpoint-interval-during-backlog.
> Related: 
> https://github.com/apache/flink/pull/22931#pullrequestreview-3820270489



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