protected void setAcidDdlDesc(DDLDescWithWriteId descWithWriteId) {
    if(this.ddlDescWithWriteId != null) {
      throw new IllegalStateException("ddlDescWithWriteId is already set: " + this.ddlDescWithWriteId);
    }
    this.ddlDescWithWriteId = descWithWriteId;
  }
Abstract ancestor of all Alter Table analyzer.
ql/src/java/org/apache/hadoop/hive/ql/ddl/table/AbstractBaseAlterTableAnalyzer.java