[FLINK-10998][metrics][ganglia] Remove Ganglia reporter

docs/monitoring/metrics.md

@@ -622,34 +622,6 @@ An example for such a list would be `host=localhost,job_name=MyJob,task_name=MyT
 
 The domain thus identifies a metric class, while the key-property list identifies one (or multiple) instances of that metric.
 
-### Ganglia (org.apache.flink.metrics.ganglia.GangliaReporter)
-
-In order to use this reporter you must copy `/opt/flink-metrics-ganglia-{{site.version}}.jar` into the `/lib` folder
-of your Flink distribution.
-
-Parameters:
-
-- `host` - the gmond host address configured under `udp_recv_channel.bind` in `gmond.conf`
-- `port` - the gmond port configured under `udp_recv_channel.port` in `gmond.conf`
-- `tmax` - soft limit for how long an old metric should be retained
-- `dmax` - hard limit for how long an old metric should be retained
-- `ttl` - time-to-live for transmitted UDP packets
-- `addressingMode` - UDP addressing mode to use (UNICAST/MULTICAST)
-
-Example configuration:
-
-{% highlight yaml %}
-
-metrics.reporter.gang.class: org.apache.flink.metrics.ganglia.GangliaReporter
-metrics.reporter.gang.host: localhost
-metrics.reporter.gang.port: 8649
-metrics.reporter.gang.tmax: 60
-metrics.reporter.gang.dmax: 0
-metrics.reporter.gang.ttl: 1
-metrics.reporter.gang.addressingMode: MULTICAST
-
-{% endhighlight %}
-
 ### Graphite (org.apache.flink.metrics.graphite.GraphiteReporter)
 
 In order to use this reporter you must copy `/opt/flink-metrics-graphite-{{site.version}}.jar` into the `/lib` folder

flink-dist/src/main/assemblies/opt.xml

@@ -91,13 +91,6 @@
  <fileMode>0644</fileMode>
  </file>
 
- <file>
- <source>../flink-metrics/flink-metrics-ganglia/target/flink-metrics-ganglia-${project.version}-jar-with-dependencies.jar</source>
- <outputDirectory>opt/</outputDirectory>
- <destName>flink-metrics-ganglia-${project.version}.jar</destName>
- <fileMode>0644</fileMode>
- </file>
-
  <file>
  <source>../flink-metrics/flink-metrics-graphite/target/flink-metrics-graphite-${project.version}-jar-with-dependencies.jar</source>
  <outputDirectory>opt/</outputDirectory>

flink-metrics/pom.xml

@@ -36,7 +36,6 @@ under the License.
  <modules>
  <module>flink-metrics-core</module>
  <module>flink-metrics-dropwizard</module>
- <module>flink-metrics-ganglia</module>
  <module>flink-metrics-graphite</module>
  <module>flink-metrics-jmx</module>
  <module>flink-metrics-prometheus</module>