leipeng 230c98f3ce fix histogram NUM_FILES_IN_SINGLE_COMPACTION (#9026)
Summary:
currently histogram `NUM_FILES_IN_SINGLE_COMPACTION` just counted files in first level of compaction input, this fix counts files in all levels of compaction input.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9026

Reviewed By: ajkr

Differential Revision: D31668241

Pulled By: jay-zhuang

fbshipit-source-id: c02f6c4a5df9fbf0b7510036594811152e8738af
2021-11-01 12:57:27 -07:00
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2020-06-15 10:47:02 -07:00
2020-12-09 16:02:12 -08:00