Github user zentol commented on the pull request:
https://github.com/apache/flink/pull/1947#issuecomment-217368732
@rmetzger you are correct that you're job failed since the previous one
wasn't cleaned up yet. Should you try to run 2 identical jobs in parallel it
will fail, since 2 jobs would use the same metrics due to name clashes. Note
that in this version this also occurs when 2 operators have the same name. I
have some additional functionality coming up that would allow you to circumvent
this issue.
@ankitcha The problem with multiple reporters is our configuration, it only
supports single-line key-value pairs, and you need to know the exact key to
access it. In order to configure multiple reporters you would either need a
nested structure (which is not supportet), or index the configuration keys
(metrics.reporter.1.class) and add a new parameter containing the indices to
use (e.g. metrics.reporter: 0, 1), which isn't particularly user-friendly. The
metric system itself could deal with multiple reporters with minor
modifications; it's all about the configuration.
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