lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Shai Erera (JIRA)" <>
Subject [jira] Commented: (LUCENE-1591) Enable bzip compression in benchmark
Date Mon, 13 Apr 2009 16:09:14 GMT


Shai Erera commented on LUCENE-1591:

argh, you bit me here - I planned to do so myself :)
for some reason their OutputStream has the file headers commented out with a comment saying
"this is added by the caller", however their InputStream reads them ... strange. Anyway, once
that's fixed and we upgrade to a proper jar, the unit test I am working on now will fail,
and it will remind us to remove writing the headers in WriteLineDocTask.

Mike - I am working on the unit test as well as defaulting by extension. I hope a patch will
be available sometime later today.

> Enable bzip compression in benchmark
> ------------------------------------
>                 Key: LUCENE-1591
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/benchmark
>            Reporter: Shai Erera
>             Fix For: 2.9
>         Attachments: ant-1.7.1.jar, commons-compress-dev20090413.jar, LUCENE-1591.patch,
LUCENE-1591.patch, LUCENE-1591.patch
> bzip compression can aid the benchmark package by not requiring extracting bzip files
(such as enwiki) in order to index them. The plan is to add a config parameter bzip.compression=true/false
and in the relevant tasks either decompress the input file or compress the output file using
the bzip streams.
> It will add a dependency on ant.jar which contains two classes similar to GZIPOutputStream
and GZIPInputStream which compress/decompress files using the bzip algorithm.
> bzip is known to be superior in its compression performance to the gzip algorithm (~20%
better compression), although it does the compression/decompression a bit slower.
> I wil post a patch which adds this parameter and implement it in LineDocMaker, EnwikiDocMaker
and WriteLineDoc task. Maybe even add the capability to DocMaker or some of the super classes,
so it can be inherited by all sub-classes.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message