John Zhuge commented on HADOOP-14703:

+1 LGTM with a nit. It is better to create test directories/files inside 
{{target}} directory. You can use {{GenericTestUtils.getTestDir()}} which 
returns a created base test directory. 
this.configFile = new File(GenericTestUtils.getTestDir(),
        String.format("hadoop-metrics2-%s.properties", TEST_PREFIX));


> ConsoleSink for metrics2
> ------------------------
>                 Key: HADOOP-14703
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14703
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: common, metrics
>    Affects Versions: 3.0.0-beta1
>            Reporter: Ronald Macmaster
>            Assignee: Ronald Macmaster
>              Labels: newbie
>         Attachments: 
> 0001-HADOOP-14703.-ConsoleSink-for-simple-metrics-printin.patch, 
> HADOOP-14703.001.patch, HADOOP-14703.002.patch
>   Original Estimate: 6h
>  Remaining Estimate: 6h
> The ConsoleSink will provide a simple solution to dump metrics to the console 
> through std.out. 
> Quick access to metrics through the console will simplify the development, 
> testing, and debugging process.

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