Updated: (LUCENE-1044) Behavior on hard power shutdown

     [ https://issues.apache.org/jira/browse/LUCENE-1044?page=co
m.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless updated LUCENE-1044:
---------------------------------------

    Attachment: LUCENE-1044.take3.patch

Attached another rev of the patch.

I changed the default to "true": I think the small
performance hit is
worth the added safety.

Also put a try/finally around the the call to sync to make
sure we
close even if we hit exception during sync(), and improved
the
javadocs.  I plan to commit in a day or two.


> Behavior on hard power shutdown
> -------------------------------
>
>                 Key: LUCENE-1044
>                 URL: htt
ps://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
>         Attachments: LUCENE-1044.patch,
LUCENE-1044.take2.patch, LUCENE-1044.take3.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.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue
online.


------------------------------------------------------------
---------
To unsubscribe, e-mail: java-dev-unsubscribelucene.apache.org
For additional commands, e-mail: java-dev-helplucene.apache.org