msokolov commented on pull request #2176:
URL: https://github.com/apache/lucene-solr/pull/2176#issuecomment-753491649


   Very exciting! Thank you for leading the way here, Uwe.
   
   > The most horrible thing I have seen is that our CFS file format starts the 
"inner" files totally unaligned. We should fix the CFSWriter to start new files 
always at multiples of 8 bytes. I will open an issue about this.
   
   I ran into this just yesterday as I was playing around with aligning vectors 
in their index files to see if any perf bump could be gained (the header seems 
to be 50 bytes usually, so some padding is needed). And then when I asserted 
alignment, realized that CFS was messing with it.
   


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