[jira] [Created] (HADOOP-14300) GraphiteSink reports metrics containing undesirable whitespaces

["Damien Claveau (JIRA)" <ji...@apache.org>]

Damien Claveau created HADOOP-14300:
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             Summary: GraphiteSink reports metrics containing undesirable whitespaces
                 Key: HADOOP-14300
                 URL: https://issues.apache.org/jira/browse/HADOOP-14300
             Project: Hadoop Common
          Issue Type: Bug
          Components: metrics
    Affects Versions: 2.7.3, 2.7.2, 2.7.1, 2.7.0, 2.6.0, 2.5.0
            Reporter: Damien Claveau
            Priority: Trivial


According to the Graphite documentation, the data sent must be in the following format: <metric path> <metric value> <metric timestamp>

But some tag values that are flattened in the metricpath string sometimes include whitespaces and violate the carbon/graphite format.

For example, the dirpath enumeration from the datanode : 
FSDatasetState.org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.Context=FSDatasetState.StorageInfo=FSDataset{dirpath='[/data/1/hdfs/data/current, /data/2/hdfs/data/current]'}.Hostname=worker1.Capacity 78436466688 1491986609

Currently, none of the aggregators available in the Graphite ecosystem can handle these malformed metrics. These whitespaces should be replaced by underscores.

I will be happy to attach a small patch.




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