crodier commented on issue #7932: CompressionUtils performance improvement ask
URL: 
https://github.com/apache/incubator-druid/issues/7932#issuecomment-506539897
 
 
   Yes, local deep storage, to a disk drive.  The "atomic" update yes, which 
was enabled last year, made it 20x slower.  You can still do the atomic update, 
but need to use the Buffered stream, not FilterOutput stream.

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