Ganglia metrics plugin should filter MBean name

Ganglia metrics shows MBean name + metric name and it appears from ganglia UI that graph is not getting rendered properly but it shows the values (counts) in host overview page. Please refer the attached screenshot.

For example, metrics name is displayed as

org.apache.flume.channel%3Atype%3Dmem-channel1.ChannelSize

but it should be

mem-channel1.ChannelSize
(or)
flume.mem-channel1.ChannelSize