GitHub user rmatharu opened a pull request:

    https://github.com/apache/samza/pull/591

    Adding filter mechanism to MetricsSnapshotReporter

    This regex based filter mechanism allow for blacklisting of metrics being 
reporter by the Snapshot Reporter, by specifying the blacklist in config.
    
    * Backwards compatible -- no config => reports everything.
    * Regex based, e.g., 
    
metrics.reporter.snapshot.blacklist=^(?!.*?(?:SamzaContainerMetrics|TaskInstanceMetrics)).*$
    
    to report only container metrics and task instance metrics. 
    
    * Uses a hashset to ensure blacklisted metric are matched against the regex 
only once.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/rmatharu/samza filter

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/samza/pull/591.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #591
    
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commit 28afa50eba84142422119d580bcc6b370d598a6e
Author: rmath...@linkedin.com <rmatharu@...>
Date:   2018-07-31T01:30:20Z

    Adding filter mechanism to MetricsSnapshotReporter

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