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https://issues.apache.org/jira/browse/FLINK-7675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tzu-Li (Gordon) Tai reopened FLINK-7675:
----------------------------------------

> LatestCompletedCheckpointExternalPathGauge should check if external path is 
> exist
> ---------------------------------------------------------------------------------
>
>                 Key: FLINK-7675
>                 URL: https://issues.apache.org/jira/browse/FLINK-7675
>             Project: Flink
>          Issue Type: Bug
>          Components: Metrics
>    Affects Versions: 1.4.0, 1.3.3
>            Reporter: Wei-Che Wei
>            Assignee: Wei-Che Wei
>            Priority: Blocker
>             Fix For: 1.4.0, 1.3.4
>
>
> For internal checkpoint, {{CompletedCheckpointStats.getExternalPath()}} could 
> be {{null}}.
> This will leads to {{LatestCompletedCheckpointExternalPathGauge}} to return 
> {{null}} value to {{MetricDumpSerialization}}, then it will throw 
> {{NullPointerException}} in {{serializeGauge}} function.



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