Update HISTORY.md for PR 8450 (#8458)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/8458

Reviewed By: zhichao-cao

Differential Revision: D29378728

Pulled By: ltamasi

fbshipit-source-id: d5a40b1414500f53823763be5c2bfce8db04daf8
This commit is contained in:
Levi Tamasi 2021-06-24 17:24:41 -07:00 committed by Facebook GitHub Bot
parent 68d8b28389
commit 66b62a123a

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### New Features
* ldb has a new feature, `list_live_files_metadata`, that shows the live SST files, as well as their LSM storage level and the column family they belong to.
* The new BlobDB implementation now tracks the amount of garbage in each blob file in the MANIFEST.
## 6.22.0 (2021-06-18)
### Behavior Changes