When we use a FileSink to log metrics from HBase we can see more names than when we use a custom metric sink. Is there something undocumented that we're missing? For instance when using FileSink, we can see WAL, RegionServer, Replication,Server , and Regions in the log. However if we use a custom sink (which happens to be writing whatever it gets to the log as well) we can only see WAL and RegionServer.
These are the config lines we're using: hbase.sink.mdmsink.class=mycomp.metrics.MdmSink hbase.sink.mdmsink.server=myserver:8880 *.period=10