arina-ielchiieva opened a new pull request #1839: DRILL-4517: Support reading empty Parquet files URL: https://github.com/apache/drill/pull/1839 1. Modified flat and complex parquet readers to output schema only when requested number of records to read is 0. In this case readers are not initialized to improve performance. 2. Allowed reading requested number of rows instead of all rows in the row group (DRILL-6528). 3. Fixed issue with nulls number determination in the row group (fixed IsPredicate#isAllNulls method). 4. Allowed reading empty parquet files via adding empty / fake row group. 5. General refactoring and unit tests. Jira - [DRILL-4517](https://issues.apache.org/jira/browse/DRILL-4517).
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to 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