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From "Paul Elschot (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-1410) PFOR implementation
Date Thu, 09 Oct 2008 14:52:44 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Paul Elschot updated LUCENE-1410:
---------------------------------

    Attachment: LUCENE-1410c.patch

The 1410c patch is much like the 1410b. It adds some bug fixes and code cleanups and it includes
a generator for java decompression classes. After applying the patch, run the generator once
in src/java/org/apache/lucene/util/pfor :

python gendecompress.py

After that, in the trunk directory:

ant -Dtestcase=TestPFor test-core

should finish successfully in just over a minute, as it also includes decompression performance
tests.

To be done:
- possibly split the performance tests from the functional tests, this might require adding
an ant target for performance tests,
- possibly add byte padding to move exceptions to natural position,
- add performance tests for decompression with exception patching,
- switch decompression to relative buffer addressing (get() instead of get(index)),
- optimize the exception decoding (i.e. patching) code,
- optimize the compression code,
- generate/correct the javadocs.


> PFOR implementation
> -------------------
>
>                 Key: LUCENE-1410
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1410
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Other
>            Reporter: Paul Elschot
>            Priority: Minor
>         Attachments: autogen.tgz, LUCENE-1410b.patch, LUCENE-1410c.patch, TestPFor2.java,
TestPFor2.java, TestPFor2.java
>
>   Original Estimate: 21840h
>  Remaining Estimate: 21840h
>
> Implementation of Patched Frame of Reference.

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