@Override
  protected boolean abort(MasterProcedureEnv env) {
    // Abort means rollback. We can't rollback all steps. HBASE-18018 added abort to all
    // Procedures. Here is a Procedure that has a PONR and cannot be aborted wants it enters this
    // range of steps; what do we do for these should an operator want to cancel them? HBASE-20022.
    return isRollbackSupported(getCurrentState()) ? super.abort(env) : false;
  }
Post split region actions
@param env MasterProcedureEnv
hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/SplitTableRegionProcedure.java