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https://issues.apache.org/jira/browse/SOLR-6806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15443601#comment-15443601
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Shawn Heisey commented on SOLR-6806:
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In general, I like the idea of just providing a reference to the online copy. 
The percentage of users that download Solr and use it in an offline system 
would be *VERY* small, perhaps statistically insignificant ... and as you say, 
downloading the source code (which is much smaller than the binary) would give 
them the ability to generate the docs locally.

I've mostly been thinking about Solr here.  Because Lucene users are developers 
who have a decent chance of writing code in places with no connectivity (like 
airplanes), I do think that Lucene must include its docs in the binary archive, 
and for that, it should probably be an inner archive, to avoid initial 
extraction of thousands of tiny files.

I do think that placing licenses into an inner archive should happen for both 
Lucene and Solr.  It will slightly complicate the build system, because the zip 
needs a zip and the tgz needs a tgz.

Can't see any reason to change how these things work in the source code.


> Reduce the size of the main Solr binary download
> ------------------------------------------------
>
>                 Key: SOLR-6806
>                 URL: https://issues.apache.org/jira/browse/SOLR-6806
>             Project: Solr
>          Issue Type: Task
>          Components: Build
>    Affects Versions: 5.0
>            Reporter: Shawn Heisey
>         Attachments: solr-zip-docs-extracted.png, solr-zip-extract-graph.png
>
>
> There has been a lot of recent discussion about how large the Solr download 
> is, and how to reduce its size.  The last release (4.10.2) weighs in at 143MB 
> for the tar and 149MB for the zip.
> Most users do not need the full download.  They may never need contrib 
> features, or they may only need one or two, with DIH being the most likely 
> choice.  They could likely get by with a download that's less than 40 MB.
> Our primary competition has a 29MB zip download for the release that's 
> current right now, and not too long ago, that was about 20MB.  I didn't look 
> very deep, but any additional features that might be available for download 
> were not immediately apparent on their website.  I'm sure they exist, but I 
> would guess that most users never need those features, so most users never 
> even see them.
> Solr, by contrast, has everything included ... a "kitchen sink" approach. 
> Once you get past the long download time and fire up the example, you're 
> presented with configs that include features you're likely to never use.
> Although this offers maximum flexibility, I think it also serves to cause 
> confusion in a new user.
> A much better option would be to create a core download that includes only a 
> minimum set of features, probably just the war, the example servlet 
> container, and an example config that only uses the functionality present in 
> the war.  We can create additional downloads that offer additional 
> functionality and configs ... DIH would be a very small addon that would 
> likely be downloaded frequently.
> SOLR-5103 describes a plugin infrastructure which would make it very easy to 
> offer a small core download and then let the user download additional 
> functionality using scripts or the UI.



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