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List:       lucene-user
Subject:    Re: Compound File Format overhead?
From:       Michael McCandless <lucene () mikemccandless ! com>
Date:       2017-04-26 18:25:10
Message-ID: CAL8PwkZ_VnYT4pnKg-eF4yv0tAzmr56pPT5az3G+K5dC73gkWA () mail ! gmail ! com
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There is no search-time overhead if you use MMapDirectory.

At index-time there is a small cost, since after flushing or merging a new
segment, we must read all bytes and write to the CFS, but that should be
low cost since typically the OS will have those bytes "hot".

Mike McCandless

http://blog.mikemccandless.com

On Mon, Apr 24, 2017 at 10:25 PM, Otis Gospodneti=C4=87 <
otis.gospodnetic@gmail.com> wrote:

> Hi,
>
> Does CFS/Compound file format have any known/measurable overhead?  Or is =
it
> so insignificant that there is no value in trying to disable it?
>
> Thanks,
> Otis
> --
> Monitoring - Log Management - Alerting - Anomaly Detection
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