[jira] [Closed] (FLINK-32217) Retain metric store can cause NPE

["Lijie Wang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-32217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lijie Wang closed FLINK-32217.
------------------------------
    Resolution: Fixed

> Retain metric store can cause NPE 
> ----------------------------------
>
>                 Key: FLINK-32217
>                 URL: https://issues.apache.org/jira/browse/FLINK-32217
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Metrics, Runtime / REST
>    Affects Versions: 1.17.0
>            Reporter: Junrui Li
>            Assignee: Junrui Li
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.18.0, 1.16.3, 1.17.2
>
>
> When metricsFetcher fetches metrics, it will update the metricsStore ([here|https://github.com/apache/flink/blob/d6c3d332340922c24d1af9dd8835d0bf790184b5/flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/legacy/metrics/MetricStore.java#LL91C44-L91C44]). But in this method, it can get null metricStore and cause NPE, which will lead to incorrect results of metrics retain, and we should also fix it from the perspective of stability.



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