yiguolei commented on code in PR #46570:
URL: https://github.com/apache/doris/pull/46570#discussion_r1907444750
##########
be/src/olap/rowset/beta_rowset_reader.cpp:
##########
@@ -226,38 +226,39 @@ Status
BetaRowsetReader::get_segment_iterators(RowsetReaderContext* read_context
// When reader type is for query, session variable `enable_segment_cache`
should be respected.
bool should_use_cache = use_cache || (_read_context->reader_type ==
ReaderType::READER_QUERY &&
enable_segment_cache);
- SegmentCacheHandle segment_cache_handle;
- {
- SCOPED_RAW_TIMER(&_stats->rowset_reader_load_segments_timer_ns);
- RETURN_IF_ERROR(SegmentLoader::instance()->load_segments(
- _rowset, &segment_cache_handle, should_use_cache,
- /*need_load_pk_index_and_bf*/ false));
- }
- // create iterator for each segment
- auto& segments = segment_cache_handle.get_segments();
- _segments_rows.resize(segments.size());
- for (size_t i = 0; i < segments.size(); i++) {
- _segments_rows[i] = segments[i]->num_rows();
- }
- if (_read_context->record_rowids) {
- // init segment rowid map for rowid conversion
- std::vector<uint32_t> segment_num_rows;
- RETURN_IF_ERROR(get_segment_num_rows(&segment_num_rows));
-
RETURN_IF_ERROR(_read_context->rowid_conversion->init_segment_map(rowset()->rowset_id(),
-
segment_num_rows));
- }
+ const bool use_lazy_init_iterators = !_is_merge_iterator();
Review Comment:
这个为啥不用lazy？
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