Chesnay Schepler updated FLINK-4831:
    Summary: Implement a log4j metric reporter  (was: IMplement a log4j metric 

> Implement a log4j metric reporter
> ---------------------------------
>                 Key: FLINK-4831
>                 URL: https://issues.apache.org/jira/browse/FLINK-4831
>             Project: Flink
>          Issue Type: Improvement
>          Components: Metrics
>    Affects Versions: 1.1.2
>            Reporter: Chesnay Schepler
>             Fix For: 1.2.0
> For debugging purpose it would be very useful to have a log4j metric 
> reporter. If you don't want to setup a metric backend you currently have to 
> rely on JMX, which a) works a bit differently than other reporters (for 
> example it doesn't extend AbstractReporter) and b) makes it a bit tricky to 
> analyze results as metrics are cleaned up once a job finishes.

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