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From "Lance Norskog (Commented) (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3491) Portable index format
Date Fri, 09 Dec 2011 07:08:40 GMT


Lance Norskog commented on LUCENE-3491:

A couple of uses for this:
# Download index into a mobile device.
# Search index packaged with an ebook. 

Both of these situations need "longevity of format version". Stuffing a verbose format into
a zip file should handle the data transmission problem. A suitable C library should do basic
searches in not very much space.

Lucene currently has no "mobile strategy". This would be a good toolkit.

> Portable index format
> ---------------------
>                 Key: LUCENE-3491
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/index
>            Reporter: Andrzej Bialecki 
>         Attachments: lucene-portable.tgz, portable.pdf
> This issue presents the idea of a special-purpose Lucene index format that is suitable
for cross-version compatibility and resilient to changes in Lucene implementations. Please
see the attached document for more details.
> The code needs branch lucene-2621 to compile and run. It's still incomplete, in a roughly
the same way as the Codec api is still incomplete ;) However, a separate tool PortableIndexExporter
was implemented to illustrate how serialization of all index parts could look like.
> Comments and suggestions are welcome!

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