vrozov commented on a change in pull request #1387: DRILL-6603: Set num_nulls for parquet statistics to -1 when actual number is not defined. URL: https://github.com/apache/drill/pull/1387#discussion_r203544029
########## File path: exec/java-exec/src/main/java/org/apache/drill/exec/expr/stat/ParquetPredicatesHelper.java ########## @@ -48,13 +48,19 @@ static boolean isAllNulls(Statistics stat, long rowCount) { } /** - * Checks that column chunk's statistics does not have nulls + * Checks that column chunk's statistics does not have nulls. + * + * <ul> + * <li>If number of nulls is more then 0, it means column has nulls.</li> Review comment: I am not sure that this comment adds any value. It is the same as stating that if a number of elements in a set is greater than zero, the set is not empty. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services