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From "Greg Tarr (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3255) Corrupted segment file not detected and wipes index contents
Date Tue, 28 Jun 2011 14:57:17 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13056550#comment-13056550
] 

Greg Tarr commented on LUCENE-3255:
-----------------------------------

Thanks for this Mark. A speedy resolution would be extremely helpful for confidence in our
lucene-based implementation.

> Corrupted segment file not detected and wipes index contents
> ------------------------------------------------------------
>
>                 Key: LUCENE-3255
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3255
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 2.9.4, 3.2
>            Reporter: Mark Harwood
>         Attachments: AllZerosSegmentFile, BadSegmentsFileTest.java
>
>
> Lucene will happily wipe an existing index if presented with a latest generation segments_n
file of all zeros. File format documentation says segments_N files should start with a format
of -9 but SegmentInfos.read accepts >=0 as valid for backward compatibility reasons.

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