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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-2978) Upgrade benchmark from commons-compress-1.0 to commons-compress-1.1 for 15 times faster gzip decompression
Date Mon, 21 Mar 2011 18:29:05 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13009263#comment-13009263
] 

Shai Erera commented on LUCENE-2978:
------------------------------------

I remember seeing a compress-1.1 jar under Solr somewhere. Can u plz check if we can use only
one of them under Lucene/Solr?

I've been thinking for some time that we need a module with common libraries used throughout
the project. Something w/o code, only jars. I think we have several copies of some jars today,
especially Apache ones. Consolidate all of them in one place will be great. We can do this
in a separate issue though…

> Upgrade benchmark from commons-compress-1.0 to commons-compress-1.1 for 15 times faster
gzip decompression
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-2978
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2978
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/benchmark
>            Reporter: Doron Cohen
>            Assignee: Doron Cohen
>             Fix For: 3.2, 4.0
>
>         Attachments: LUCENE-2978.patch
>
>
> In LUCENE-1540 TrecContentSource moved from Java's GZipInputStream to common-compress
1.0. 
> This slowed down gzip decompression by a factor of 15. 
> Upgrading to 1.1 solves this problem.
> I verified that the problem is only in GZIP, not in BZIP.
> On the way, as 1.1 introduced constants for the compression methods, the code can be
made a bit nicer.

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