chaoyli commented on a change in pull request #3207: StorageEngine:
unused_rowsets use unordered_multimap
URL: https://github.com/apache/incubator-doris/pull/3207#discussion_r398507447
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File path: be/src/olap/storage_engine.h
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@@ -296,7 +296,9 @@ class StorageEngine {
static StorageEngine* _s_instance;
Mutex _gc_mutex;
- std::unordered_map<std::string, RowsetSharedPtr> _unused_rowsets;
+ // map<rowset_id(str), pair<rowset_path(str),RowsetSharedPtr>>
+ // if we use RowsetId as the key, we need custom hash func
+ std::unordered_multimap<std::string,
std::pair<std::string,RowsetSharedPtr>> _unused_rowsets;
Review comment:
Previous, rowset_id is not unique.
Nowadays, rowset_id is unique. So you can use
std::unordered_map<std::string, RowsetSharedPtr> _unused_rowsets instead, not
use unique_id().
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