[GitHub] [lucene] gautamworah96 commented on pull request #11796: GITHUB#11795: Add FilterDirectory to track write amplification factor

[GitBox <gi...@apache.org>]

gautamworah96 commented on PR #11796:
URL: https://github.com/apache/lucene/pull/11796#issuecomment-1255423884

   For folks more familiar with WAF calculations for Search applications, is the formula of `(flushedBytes + mergedBytes) / flushedBytes` always correct? 
   
   For example, does the `IOContext.Context.MERGE` operation not include all the bytes written during a `FLUSH` operation (i.e when we are writing to disk)? or should it be something like `mergedBytes/flushedBytes` when there have been merges and `1` otherwise when `flushedBytes` are 0?


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