[jira] Closed: (NUTCH-641) IndexSorter incorrectly copies stored fields

["Andrzej Bialecki (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NUTCH-641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrzej Bialecki  closed NUTCH-641.
-----------------------------------

    Resolution: Fixed

Patch applied.

> IndexSorter incorrectly copies stored fields
> --------------------------------------------
>
>                 Key: NUTCH-641
>                 URL: https://issues.apache.org/jira/browse/NUTCH-641
>             Project: Nutch
>          Issue Type: Bug
>          Components: indexer
>    Affects Versions: 1.0.0
>            Reporter: Andrzej Bialecki 
>            Assignee: Andrzej Bialecki 
>            Priority: Critical
>             Fix For: 1.0.0
>
>         Attachments: indexSorter.patch
>
>
> Recent versions of Lucene introduced IndexReader.document(int, FieldSelector) method. When using IndexWriter.addIndexes(IndexReader[]) Lucene now uses that method from IndexReader instead of the old one IndexReader.document(int).
> Unfortunately, this new method is not overriden in IndexSorter, which leads to a subtle corruption of sorted indexes - while the indexed fields are sorted properly, the values from stored fields are not sorted and remain in the sorted index in the original order. This means that in a sorted index the values of indexed fields and stored fields are completely out of sync, which later results in incorrect documents being retrieved from segments.

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