@Override
    public boolean isAborted() {
      return aborted;
    }
Tests that the rpc scheduler is called when requests arrive. When Rpc handler thread dies, the
client will hang and the test will fail. The test is meant to be a unit test to test the
behavior.
hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestRpcHandlerException.java