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https://issues.apache.org/jira/browse/LUCENE-4919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13626453#comment-13626453
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Robert Muir commented on LUCENE-4919:
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This patch also doesn't fix code in UnicodeUtil that relies upon this.
I think i'm against the change: the whole issue is wrong to me as the hashcode
does what it documents it should do already, and a lot of things rely upon the
current function.
I don't understand why the javadocs for BytesRef.hashCode make it seem like it
should be doing something else.
> IntsRef, BytesRef and CharsRef return incorrect hashcode when filled with 0
> ---------------------------------------------------------------------------
>
> Key: LUCENE-4919
> URL: https://issues.apache.org/jira/browse/LUCENE-4919
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/other
> Affects Versions: 4.2
> Reporter: Renaud Delbru
> Fix For: 4.3
>
> Attachments: LUCENE-4919.patch
>
>
> IntsRef, BytesRef and CharsRef implementation do not follow the java
> Arrays.hashCode implementation, and return incorrect hashcode when filled
> with 0.
> For example, an IntsRef with \{ 0 \} will return the same hashcode than an
> IntsRef with \{ 0, 0 \}.
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