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Date: Tue, 17 May 2011 14:28:47 +0000 (UTC)
From: "Adam Kocoloski (JIRA)" <jira@apache.org>
To: dev@couchdb.apache.org
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Subject: [jira] [Commented] (COUCHDB-994) Crash after compacting large views
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    [ https://issues.apache.org/jira/browse/COUCHDB-994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034785#comment-13034785 ] 

Adam Kocoloski commented on COUCHDB-994:
----------------------------------------

Hi Filipe, did you happen to read my long analysis of the bug earlier in this ticket?  We don't write the header in the compacted view index file before triggering the switchover, so _any_ crash in the time before the header is eventually written will result in a complete reset.  I don't believe your patch addresses this (though I do think it was a good thing to do in its own right).

> Crash after compacting large views
> ----------------------------------
>
>                 Key: COUCHDB-994
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-994
>             Project: CouchDB
>          Issue Type: Bug
>    Affects Versions: 1.0.2
>         Environment: Centos5 64bit vm with 2CPU and 4G RAM running Erlang R14B and configured to use the 64bit js-devel libraries.
> URL: http://svn.apache.org/repos/asf/couchdb/branches/1.0.x
> Repository Root: http://svn.apache.org/repos/asf
> Repository UUID: 13f79535-47bb-0310-9956-ffa450edef68
> Revision: 1050680
>            Reporter: Bob Clary
>             Fix For: 1.2
>
>         Attachments: couch_errors.txt, couch_errors_2.txt
>
>
> The database has over 9 million records. Several of the views are relatively dense in that they emit a key for most documents. The views are successfully created initially but with relatively large sizes from 20 to 95G. When attempting to compact them, the server will crash upon completion of the compaction.
> This does not occur with the released 1.0.1 version but does with the 1.0.x svn version. I'll attach example logs. Unfortunately they are level error and may not have enough information.

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