BePPPower commented on code in PR #13515:
URL: https://github.com/apache/doris/pull/13515#discussion_r1000839204
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be/src/vec/exec/format/csv/csv_reader.h:
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@@ -57,6 +58,16 @@ class CsvReader : public GenericReader {
const TFileScanRangeParams& _params;
const TFileRangeDesc& _range;
const std::vector<SlotDescriptor*>& _file_slot_descs;
+ // Only for query task, save the columns' index which need to be read.
+ // eg, there are 3 cols in "_file_slot_descs" named: k1, k2, k3
+ // and the corressponding pposition in file is 0, 3, 5.
Review Comment:
```suggestion
// and the corressponding position in file is 0, 3, 5.
```
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