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https://issues.apache.org/jira/browse/LUCENE-5914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14229170#comment-14229170
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Robert Muir commented on LUCENE-5914:
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I will think more on the header check logic. On one hand it would be nice if we
could figure out an idiom for {{CodecUtil.checkFooter(Throwable, Input...)}}
that would be safe, but every option I think of is crazier than the current
stuff.
Its also a bit wierd to be slurping in 3 read-once metadata files here. This
adds complexity at read... the current format is simpler here with just a
single file. Can we avoid this?
> More options for stored fields compression
> ------------------------------------------
>
> Key: LUCENE-5914
> URL: https://issues.apache.org/jira/browse/LUCENE-5914
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Fix For: 5.0
>
> Attachments: LUCENE-5914.patch, LUCENE-5914.patch, LUCENE-5914.patch,
> LUCENE-5914.patch
>
>
> Since we added codec-level compression in Lucene 4.1 I think I got about the
> same amount of users complaining that compression was too aggressive and that
> compression was too light.
> I think it is due to the fact that we have users that are doing very
> different things with Lucene. For example if you have a small index that fits
> in the filesystem cache (or is close to), then you might never pay for actual
> disk seeks and in such a case the fact that the current stored fields format
> needs to over-decompress data can sensibly slow search down on cheap queries.
> On the other hand, it is more and more common to use Lucene for things like
> log analytics, and in that case you have huge amounts of data for which you
> don't care much about stored fields performance. However it is very
> frustrating to notice that the data that you store takes several times less
> space when you gzip it compared to your index although Lucene claims to
> compress stored fields.
> For that reason, I think it would be nice to have some kind of options that
> would allow to trade speed for compression in the default codec.
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