Method call

src/RegionClient.java:1079–1087

(final Object arg)

    // going to run the callback chain of the MultiAction.
    final class Multi2SingleCB implements Callback<Object, Object> {
      public Object call(final Object arg) {
        // If there was a problem, let the MultiAction know.
        // Otherwise, give the HBaseRpc in argument to the MultiAction
        // callback.  This is kind of a kludge: the MultiAction callback
        // will understand that this means that this single-RPC was already
        // successfully executed on its own.
        batch.callback(arg instanceof Exception ? arg : rpc);
        return arg;
      }
    }
    rpc.getDeferred().addBoth(new Multi2SingleCB());
    return rpc;