Depends on [SPARK-5413](https://issues.apache.org/jira/browse/SPARK-5413) / #4209, included here, will rebase once the latter's merged.
Author: Ryan Williams <ryan.blake.williams@gmail.com>
Closes#4218 from ryan-williams/udp and squashes the following commits:
ebae393 [Ryan Williams] Add support for sending Graphite metrics via UDP
cb58262 [Ryan Williams] bump metrics dependency to v3.1.0
Author: Ryan Williams <ryan.blake.williams@gmail.com>
Closes#3736 from ryan-williams/hist and squashes the following commits:
421d8ff [Ryan Williams] add another random typo fix
76d6a4c [Ryan Williams] remove hdfs example
a2d0f82 [Ryan Williams] code review feedback
9ca7629 [Ryan Williams] [SPARK-4889] update history server example cmds
This adds a metrics sink for graphite. The sink must
be configured with the host and port of a graphite node
and optionally may be configured with a prefix that will
be prepended to all metrics that are sent to graphite.