unit_name should be explicitly specified.
metric_type: gauge
alias: hbase.regionserver.replication.sink.age_of_last_applied_op
description: Replication time lag of last applied WAL entry between source and sink.
+ unit_name: millisecond
- bean: Hadoop:service=HBase,name=RegionServer,sub=Replication
attribute: sink.appliedBatches
metric_type: gauge
