Mailing-List: contact dev-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@lucene.apache.org
Date: Fri, 18 Mar 2011 19:28:29 +0000 (UTC)
From: "Robert Muir (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
Message-ID: 
 <941177178.12498.1300476509549.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <1772225733.11944.1300464749605.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] Commented: (LUCENE-2975) MMapDirectory on chunk size
 boundaries broken
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/LUCENE-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13008589#comment-13008589 ] 

Robert Muir commented on LUCENE-2975:
-------------------------------------

1.6.0_23 fails also, so its not just _24+

> MMapDirectory on chunk size boundaries broken
> ---------------------------------------------
>
>                 Key: LUCENE-2975
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2975
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 3.1
>            Reporter: Uwe Schindler
>            Priority: Blocker
>             Fix For: 3.1
>
>
> When testing the 3.1-RC1 made by Yonik on the PANGAEA (www.pangaea.de) productive system I figured out that suddenly on a large segment (about 5 GiB) some stored fiels suddenly produce a strange deflate decompression problem (CompressionTools) although the stored fields are no longer pre-3.0 compressed. It seems that the header of the stored field is read incorrectly at the buffer boundary in MultiMMapDir and then FieldsReader just incorrectly detects a deflate-compressed field (CompressionTools).
> The error occurs reproducible on CheckIndex with MMapDirectory, but not with NIODir or SimpleDir. The FDT file of that segment is 2.6 GiB, on Solaris the chunk size is Integer.MAX_VALUE, so we have 2 MultiMMap IndexInputs.
> Robert and me have the index ready as a tar file, we will do tests on our local machines and hopefully solve the bug, maybe introduced by Robert's recent changes to MMap.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org