HBase not cleaning up split parents

[Austin Heyne]

We're running HBase 1.4.8 on S3 (EMR 5.20) and we're seeing that after a 
series of splits and a major compaction the split parents are not 
getting removed. The on disk size of some of our tables is 6x what HBase 
is reporting in the table details. The RS_COMPACTED_FILES_DISCHARGER 
threads are all parked waiting and we haven't see a reduction in size in 
well over a week. The only thing of note on the cluster is we have two 
regions stuck in a transition state until we have a maintenance window 
to roll the master.

Has anyone experienced this or have a way to encourage the regionservers 
to start the cleanup process?

Thanks,
Austin