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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2007/12/06 18:29:43 UTC
[jira] Updated: (LUCENE-1044) Behavior on hard power shutdown
[ https://issues.apache.org/jira/browse/LUCENE-1044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless updated LUCENE-1044:
---------------------------------------
Fix Version/s: (was: 2.3)
2.4
> Behavior on hard power shutdown
> -------------------------------
>
> Key: LUCENE-1044
> URL: https://issues.apache.org/jira/browse/LUCENE-1044
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Environment: Windows Server 2003, Standard Edition, Sun Hotspot Java 1.5
> Reporter: venkat rangan
> Assignee: Michael McCandless
> Fix For: 2.4
>
> Attachments: FSyncPerfTest.java, LUCENE-1044.patch, LUCENE-1044.take2.patch, LUCENE-1044.take3.patch, LUCENE-1044.take4.patch
>
>
> When indexing a large number of documents, upon a hard power failure (e.g. pull the power cord), the index seems to get corrupted. We start a Java application as an Windows Service, and feed it documents. In some cases (after an index size of 1.7GB, with 30-40 index segment .cfs files) , the following is observed.
> The 'segments' file contains only zeros. Its size is 265 bytes - all bytes are zeros.
> The 'deleted' file also contains only zeros. Its size is 85 bytes - all bytes are zeros.
> Before corruption, the segments file and deleted file appear to be correct. After this corruption, the index is corrupted and lost.
> This is a problem observed in Lucene 1.4.3. We are not able to upgrade our customer deployments to 1.9 or later version, but would be happy to back-port a patch, if the patch is small enough and if this problem is already solved.
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