[DISCUSS] the IA annotation on hbase client exceptions

[Yulin Niu]

Hi, guys:

There are IA.Public and also IA.Private under the hbase-client  exceptions
package, whether the IA.Private exceptions should be IA.Public?
e.g.MasterRegistryFetchException, OutOfOrderScannerNextException
,RegionMovedException,RegionOpeningException
And any others thing about the IA annotation on exceptions?
FYI 2538 <https://github.com/apache/hbase/pull/2538>

Thanks