private void updateMeta(final MasterProcedureEnv env) throws IOException {
    env.getAssignmentManager().markRegionAsSplit(getParentRegion(), getParentRegionServerName(env),
      daughterOneRI, daughterTwoRI);
  }
Add daughter regions to META
@param env MasterProcedureEnv
hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.java