public static String getEpochFn(DatabaseProduct dbProduct) throws MetaException {
    return dbProduct.getMillisAfterEpochFn();
  }
Get database specific function which returns the milliseconds value after the epoch.
@param dbProduct The type of the db which is used
@throws MetaException For unknown database type.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnUtils.java