761417898 commented on code in PR #192:
URL: https://github.com/apache/tsfile/pull/192#discussion_r1712904278
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cpp/src/common/tsfile_common.cc:
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@@ -48,6 +50,56 @@ int TimeseriesIndex::add_chunk_meta(ChunkMeta *chunk_meta,
/* ================ TSMIterator ================ */
int TSMIterator::init() {
+ // sort chunk_group_meta_list_ ： {[measurementA, offsetA1], [measurementB,
+ // offsetB1], [measurementA, offsetA2], [measurementB, offsetB2]} ->
+ // {[measurementA, offsetA1], [measurementA, offsetA2], [measurementB,
+ // offsetB1], [measurementB, offsetB2]}
+ for (auto chunk_group_meta_iter = chunk_group_meta_list_.begin();
+ chunk_group_meta_iter != chunk_group_meta_list_.end();
+ chunk_group_meta_iter++) {
+ auto chunk_meta_list = chunk_group_meta_iter.get()->chunk_meta_list_;
+ std::vector<ChunkMeta *> vec;
+ for (auto it = chunk_meta_list.begin(); it != chunk_meta_list.end();
+ it++) {
+ vec.push_back(it.get());
+ }
+
+ std::vector<std::vector<ChunkMeta *>> groups;
+ for (auto *chunk_meta : vec) {
+ bool added_to_group = false;
+ for (auto &group : groups) {
+ if (group[0]->measurement_name_.equal_to(
+ chunk_meta->measurement_name_)) {
+ group.push_back(chunk_meta);
+ added_to_group = true;
+ break;
+ }
+ }
+ if (!added_to_group) {
+ groups.push_back({chunk_meta});
+ }
+ }
Review Comment:
Okay, change it to `map<std::string, std::vector<ChunkMeta *>>`.
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