xinyiZzz opened a new pull request, #28149:
URL: https://github.com/apache/doris/pull/28149
## Proposed changes
1. LRU Cache of type `LRUCacheType::NUMBER` no longer records memory Bytes
separately.
Only records entry number, because using `LRUCacheType::NUMBER` type is
usually due to inability to accurately track memory.
2. LRU Cache of type `LRUCacheType::NUMBER` cache capacity means the number
of entries, so the `charge` of insert is always `1` instead of
`sizeof(CacheValue)`, which is easier to understand.
3. `TabletSchema` and `Schema` no longer track memory, only track columns
count. because cannot accurately track memory size.
4. Segment::_meta_mem_usage Unknown value overflow, causes the value of
SegmentMeta MemTracker is similar to `-2912341218700198079`. So, temporarily
put it in experimental type tracker.
5. TabletMeta MemTracker changed to track TabletSchema columns count.
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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