imay commented on a change in pull request #2187: Fix bug :
num_of_columns_from_file incompatibility cause BE crashed during the upgrade
URL: https://github.com/apache/incubator-doris/pull/2187#discussion_r345672399
##########
File path: be/src/exec/parquet_scanner.cpp
##########
@@ -143,7 +145,11 @@ Status ParquetScanner::open_next_reader() {
file_reader->close();
continue;
}
- _cur_file_reader = new ParquetReaderWrap(file_reader.release(),
range.num_of_columns_from_file);
+ if (range.__isset.num_of_columns_from_file ) {
Review comment:
```suggestion
if (range.__isset.num_of_columns_from_file) {
```
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