[jira] Closed: (LUCENE-879) Document number integrity merge policy

["Shai Erera (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-879?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shai Erera closed LUCENE-879.
-----------------------------

    Resolution: Fixed

Closing for long inactivity. Also, there seems to be a reasonable workaround proposed that would not require Lucene to handle mock empty documents to preserve the other doc IDs. In addition, we're working towards out of order merges etc., so I don't see how this would fit in the future at all.

> Document number integrity merge policy
> --------------------------------------
>
>                 Key: LUCENE-879
>                 URL: https://issues.apache.org/jira/browse/LUCENE-879
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Store
>    Affects Versions: 2.1
>            Reporter: Karl Wettin
>            Priority: Minor
>         Attachments: LUNCENE-879.diff, LUNCENE-879.diff
>
>
> This patch allows for document numbers stays the same even after merge of segments with deletions.
> Consumer needs to do this:
> indexWriter.setSkipMergingDeletedDocuments(false);
> The effect will be that deleted documents are replaced by a new Document() in the merged segment, but not marked as deleted. This should probably be some policy thingy that allows for different solutions such as keeping the old document, et c.
> Also see http://www.nabble.com/optimization-behaviour-tf3723327.html#a10418880

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