Chesnay Schepler created FLINK-4831:

             Summary: IMplement a log4j metric reporter
                 Key: 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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