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https://issues.apache.org/jira/browse/LUCENE-5741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14019879#comment-14019879
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Zhuravskiy Vitaliy edited comment on LUCENE-5741 at 6/6/14 2:35 PM:
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Hi, Michael, on 4.3.1 bug still present. Same situation on the 4.8.1
(http://postimg.org/image/zfb2ww6x5/).
I wrote:
"segmentInfos.indexOf(info)
always return -1 because org.apache.lucene.index.SegmentInfos does not have
equals method"
Please read
http://docs.oracle.com/javase/7/docs/api/java/util/List.html#indexOf(java.lang.Object)
, indexOf uses equals method of an object.
On the screenshoot (http://postimg.org/image/jvtezvqnn/) we have two instance
of org.apache.lucene.index.SegmentInfoPerCommit (SegmentCommitInfo on 4.8.1),
which has same values, but different for ArrayList, because has not overrided
equals method (for example like in the SegmentInfo). Class must have overriden
equals method, if you you want ArrayList.indexOf works (ArrayList.indexOf into
org.apache.lucene.index.SegmentInfos#indexOf)
Screenshoot of debuger on 4.8.1 with 4.3.1 index
http://postimg.org/image/zfb2ww6x5/
I saw solr-lucene-core sources there uses hashmap instead list, and works. But
in current source code class SegmentCommitInfo need to be equals method.
was (Author: zhuravskiy.vs):
Hi, Michael, on 4.3.1 bug still present. Same situation on the 4.8.1
(http://postimg.org/image/zfb2ww6x5/).
I wrote:
"segmentInfos.indexOf(info)
always return -1 because org.apache.lucene.index.SegmentInfos does not have
equals method"
Please read
http://docs.oracle.com/javase/7/docs/api/java/util/List.html#indexOf(java.lang.Object)
, indexOf uses equals method of an object.
On the screenshoot (http://postimg.org/image/jvtezvqnn/) we have two instance
of org.apache.lucene.index.SegmentInfoPerCommit (SegmentCommitInfo on 4.8.1),
which has same values, but different for ArrayList, because has not overrided
equals method (for example like in the SegmentInfo). Class must have overriden
equals method, if you you want ArrayList.indexOf works (ArrayList.indexOf into
org.apache.lucene.index.SegmentInfos#indexOf)
Screenshoot of debuger on 4.8.1 with 4.3.1 index
http://postimg.org/image/zfb2ww6x5/
> IndexWriter.tryDeleteDocument does not work
> -------------------------------------------
>
> Key: LUCENE-5741
> URL: https://issues.apache.org/jira/browse/LUCENE-5741
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Affects Versions: 4.3, 4.5, 4.6, 4.7, 4.8, 4.8.1
> Reporter: Zhuravskiy Vitaliy
> Assignee: Michael McCandless
> Priority: Critical
>
> I am using "fresh"a and opened reader.
> One segement and 3 documents in index.
> tryDeleteDocument always return false, i deep into your code, and see follow,
> that
> segmentInfos.indexOf(info)
> always return -1 because org.apache.lucene.index.SegmentInfoPerCommit doesnot
> have equals method, see screenshoot for more inforamtion
> http://postimg.org/image/jvtezvqnn/
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