Asynchbase: Retries for RegionMovedException. (https://rbcommons.com/s/pepperdata/r/4768)
The bug was that OpenTSDB/asynchbase did not recognize
org.apache.hadoop.hbase.exceptions.RegionMovedException when HBase 0.96 raised
it when a region for a tsdb table was moved. It passed through as an unknown
RemoteException, and the corressponding queries failed. It lead to many OpenTSDB
integration test failures. The fix was retyring the HBase RPC requests that were hit by
RegionMovedException like NotServingRegionException.