vrozov commented on a change in pull request #1349: DRILL-6554: Minor code
improvements in parquet statistics handling
URL: https://github.com/apache/drill/pull/1349#discussion_r199207853
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetReaderUtility.java
##########
@@ -417,16 +417,9 @@ public static DateCorruptionStatus
checkForCorruptDateValuesInStatistics(Parquet
// column does not appear in this file, skip it
continue;
}
- Statistics statistics =
footer.getBlocks().get(rowGroupIndex).getColumns().get(colIndex).getStatistics();
- Integer max = (Integer) statistics.genericGetMax();
- if (statistics.hasNonNullValue()) {
- if (max > ParquetReaderUtility.DATE_CORRUPTION_THRESHOLD) {
- return DateCorruptionStatus.META_SHOWS_CORRUPTION;
- }
- } else {
- // no statistics, go check the first page
- return DateCorruptionStatus.META_UNCLEAR_TEST_VALUES;
- }
+ IntStatistics statistics =
(IntStatistics)footer.getBlocks().get(rowGroupIndex).getColumns().get(colIndex).getStatistics();
Review comment:
Please see parquet format spec. `DATE` is always `int32`.
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