@Override
  public SimpleServerCall createCall(int id, BlockingService service, MethodDescriptor md,
    RequestHeader header, Message param, ExtendedCellScanner cellScanner, long size,
    InetAddress remoteAddress, int timeout, CallCleanup reqCleanup) {
    return new SimpleServerCall(id, service, md, header, param, cellScanner, this, size,
      remoteAddress, EnvironmentEdgeManager.currentTime(), timeout, this.rpcServer.bbAllocator,
      this.rpcServer.cellBlockBuilder, reqCleanup, this.responder);
  }
Process the data buffer and clean the connection state for the next call.
hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleServerRpcConnection.java