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https://issues.apache.org/jira/browse/LUCENE-6055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14204616#comment-14204616
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Uwe Schindler commented on LUCENE-6055:
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We may need to add a short notice to MIGRATE.txt in branch_5x, because this is
a backwards break that may impact some users and is not obvious to see.
> PayloadAttribute.clone() should deep clone its BytesRef
> -------------------------------------------------------
>
> Key: LUCENE-6055
> URL: https://issues.apache.org/jira/browse/LUCENE-6055
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/index
> Reporter: Shai Erera
> Assignee: Shai Erera
> Fix For: Trunk, 5.x
>
> Attachments: LUCENE-6055.patch
>
>
> PayloadAttribute.clone() does a shallow clone, unlike e.g. CharTermAttribute.
> Attributes should deep clone, otherwise capturing state isn't correct. In
> addition, both PA's and CTA's .clone() falsely documents that they do shallow
> cloning on purposes, so need to fix that too.
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