lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (LUCENE-2365) Finding Newest Segment In Empty Index
Date Mon, 05 Apr 2010 19:20:27 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless reassigned LUCENE-2365:
------------------------------------------

    Assignee: Michael McCandless

> Finding Newest Segment In Empty Index
> -------------------------------------
>
>                 Key: LUCENE-2365
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2365
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 3.0.1
>            Reporter: Karthick Sankarachary
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 3.0.1
>
>         Attachments: LUCENE-2365.patch
>
>
> While extending the index writer, I discovered that its newestSegment method does not
check to see if there are any segments before accessing the segment infos vector. Specifically,
if you call the IndexWriter#newestSegment method on a brand-new index which is essentially
empty, then it throws an java.lang.ArrayIndexOutOfBoundsException exception.
> The proposed fix is to return null if no segments exist, as shown below:
> --- lucene/src/java/org/apache/lucene/index/IndexWriter.java	(revision 930788)
> +++ lucene/src/java/org/apache/lucene/index/IndexWriter.java	(working copy)
> @@ -4587,7 +4587,7 @@
>  
>    // utility routines for tests
>    SegmentInfo newestSegment() {
> -    return segmentInfos.info(segmentInfos.size()-1);
> +    return segmentInfos.size() > 0 ? segmentInfos.info(segmentInfos.size()-1) : null;
>    }

-- 
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-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-dev-help@lucene.apache.org


Mime
View raw message