ASF GitHub Bot commented on FLINK-8890:

Github user aljoscha commented on a diff in the pull request:

    --- Diff: 
    @@ -290,16 +289,14 @@ public static boolean checkpointsMatch(
                Collection<CompletedCheckpoint> first,
                Collection<CompletedCheckpoint> second) {
    --- End diff --
    I'm copying because I don't know what the exact type of the input will be 
and also because I need to extract the set of interesting fields explicitly. 

> Compare checkpoints with order in CompletedCheckpoint.checkpointsMatch()
> ------------------------------------------------------------------------
>                 Key: FLINK-8890
>                 URL: https://issues.apache.org/jira/browse/FLINK-8890
>             Project: Flink
>          Issue Type: Improvement
>          Components: State Backends, Checkpointing
>            Reporter: Aljoscha Krettek
>            Assignee: Aljoscha Krettek
>            Priority: Major
>             Fix For: 1.3.3, 1.5.0, 1.4.2
> This method is used, among other things, to check if a list of restored 
> checkpoints is stable after several restore attempts in the ZooKeeper 
> checkpoint store. The order of checkpoints is somewhat important because we 
> want the latest checkpoint to stay the latest checkpoint.

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