zhannngchen commented on code in PR #20907:
URL: https://github.com/apache/doris/pull/20907#discussion_r1244953260
##########
be/src/olap/compaction.cpp:
##########
@@ -574,11 +575,47 @@ Status Compaction::modify_rowsets(const
Merger::Statistics* stats) {
RETURN_IF_ERROR(_tablet->check_rowid_conversion(_output_rowset,
location_map));
location_map.clear();
+
{
std::lock_guard<std::mutex>
wrlock_(_tablet->get_rowset_update_lock());
std::lock_guard<std::shared_mutex>
wrlock(_tablet->get_header_lock());
SCOPED_SIMPLE_TRACE_IF_TIMEOUT(TRACE_TABLET_LOCK_THRESHOLD);
+ // Here we will calculate all the rowsets delete bitmaps which are
committed but not published to reduce the calculation pressure
+ // of publish phase.
+ // All rowsets which need to recalculate have been published so we
don't need to acquire lock.
+ // Step1: collect this tablet's all committed rowsets' delete
bitmaps
+ TxnManager::txn_tablet_map_t txn_tablet_map {};
+
StorageEngine::instance()->txn_manager()->get_all_commit_tablet_txn_info_by_tablet(
+ _tablet, txn_tablet_map);
+
+ // Step2: calculate all rowsets' delete bitmaps which are
published during compaction.
+ int64_t cur_max_version = _tablet->max_version().second;
+ RowsetIdUnorderedSet rowset_ids =
_tablet->all_rs_id(cur_max_version);
+ rowset_ids.insert(_output_rowset->rowset_id());
+ for (const auto& it : txn_tablet_map) {
+ for (const auto& tablet_load_it : it.second) {
+ const TabletTxnInfo& tablet_txn_info =
tablet_load_it.second;
+ DeleteBitmap output_delete_bitmap(_tablet->tablet_id());
+ RowLocation src;
+ std::shared_ptr<Rowset> rowset = tablet_txn_info.rowset;
+ src.rowset_id = rowset->rowset_id();
+ for (uint32_t seg_id = 0; seg_id < rowset->num_segments();
++seg_id) {
+ src.segment_id = seg_id;
+ _tablet->convert_rowid(rowset,
*tablet_txn_info.delete_bitmap, src,
Review Comment:
can't use such delete bitmap directly
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