leipeng 01bd86ad35 InternalStats::DumpCFMapStat: fix sum.w_amp (#9065)
Summary:
sum `w_amp` will be a very large number`(bytes_written + bytes_written_blob)` when there is no any flush and ingest.

This PR set sum `w_amp` to zero if there is no any flush and ingest, this is conform to per-level `w_amp` computation.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9065

Reviewed By: ajkr

Differential Revision: D31943994

Pulled By: riversand963

fbshipit-source-id: acbef5e331debebfad09e0e0d8d0885ebbc00609
2021-10-31 23:11:43 -07:00
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2020-06-15 10:47:02 -07:00
2020-12-09 16:02:12 -08:00