@Override
    public String toString() {
      return "TwoStep(procId=" + getProcId() + " execId=" + execId + ")";
    }
For now we do not guarantee this, we will restore the locks when restarting ProcedureExecutor so
we should use lock to obtain the correct order. Ignored.
hbase-procedure/src/test/java/org/apache/hadoop/hbase/procedure2/TestProcedureReplayOrder.java