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Posted to issues@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2017/04/05 21:29:41 UTC

[jira] [Closed] (FLINK-6184) Buffer metrics can cause NPE

     [ https://issues.apache.org/jira/browse/FLINK-6184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chesnay Schepler closed FLINK-6184.
-----------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: 1.3.0)
                   1.2.1

1.2: 961134d4e988edc01705501a8530aa5a120080cd
Subsumed in 1.3 by FLINK-5090.

> Buffer metrics can cause NPE
> ----------------------------
>
>                 Key: FLINK-6184
>                 URL: https://issues.apache.org/jira/browse/FLINK-6184
>             Project: Flink
>          Issue Type: Bug
>          Components: Metrics
>    Affects Versions: 1.2.0, 1.3.0
>            Reporter: Chesnay Schepler
>            Assignee: Chesnay Schepler
>            Priority: Blocker
>             Fix For: 1.2.1
>
>
> The Buffer metrics defined in the TaskIOMetricGroup are created when a Task is created. At this time, the bufferPool in the Input gates that the metrics make use of is still null, leading to possible NPEs.
> These metrics should either be created after the required objects are fully initialized or guard this case with null checks.



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