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https://issues.apache.org/jira/browse/LUCENE-3255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Harwood updated LUCENE-3255:
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    Attachment: BadSegmentsFileTest.java

> 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: 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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