public Builder withValidTxnList(Supplier<String> validTxnList) {
      this.validTxnList = validTxnList;
      return this;
    }
The source HiveConf object used to create the QueryState. If runAsync is false, and the
confOverLay is empty then we will reuse the conf object as a backing datastore for the
QueryState. We will create a clone of the conf object otherwise.
@param hiveConf The source HiveConf
@return The builder
ql/src/java/org/apache/hadoop/hive/ql/QueryState.java