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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-1591) Enable bzip compression in benchmark
Date Wed, 08 Apr 2009 17:46:13 GMT
Enable bzip compression in benchmark
------------------------------------

                 Key: LUCENE-1591
                 URL: https://issues.apache.org/jira/browse/LUCENE-1591
             Project: Lucene - Java
          Issue Type: Improvement
          Components: contrib/benchmark
            Reporter: Shai Erera
             Fix For: 2.9


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.

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