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[Fix](parquet-reader) fix parquet late materialization‌ by resolve scanner starve problem. #46121

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[Fix](parquet-reader) fix parquet late materialization‌ by resolve scanner starve problem. #46121

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10 changes: 6 additions & 4 deletions be/src/vec/exec/format/parquet/vparquet_group_reader.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -522,16 +522,18 @@ Status RowGroupReader::_do_lazy_read(Block* block, size_t batch_size, size_t* re
Block::erase_useless_column(block, origin_column_num);

if (!pre_eof) {
if (pre_raw_read_rows >= config::doris_scanner_row_num) {
break;
}
// If continuous batches are skipped, we can cache them to skip a whole page
_cached_filtered_rows += pre_read_rows;
if (pre_raw_read_rows >= config::doris_scanner_row_num) {
*read_rows = 0;
_convert_dict_cols_to_string_cols(block);
return Status::OK();
}
} else { // pre_eof
// If filter_map_ptr->filter_all() and pre_eof, we can skip whole row group.
*read_rows = 0;
*batch_eof = true;
_lazy_read_filtered_rows += pre_read_rows;
_lazy_read_filtered_rows += (pre_read_rows + _cached_filtered_rows);
_convert_dict_cols_to_string_cols(block);
return Status::OK();
}
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