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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-8233) Add support for soft deletes to IndexWriter delete accounting
Date Sun, 01 Apr 2018 14:36:00 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-8233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16421676#comment-16421676
] 

Simon Willnauer commented on LUCENE-8233:
-----------------------------------------

ping [~rcmuir] [~mikemccand]

>  Add support for soft deletes to IndexWriter delete accounting
> --------------------------------------------------------------
>
>                 Key: LUCENE-8233
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8233
>             Project: Lucene - Core
>          Issue Type: Improvement
>    Affects Versions: 7.4, master (8.0)
>            Reporter: Simon Willnauer
>            Priority: Major
>             Fix For: 7.4, master (8.0)
>
>         Attachments: LUCENE-8233.patch
>
>
> This change adds support for soft deletes as a fully supported feature by the index writer.
Soft deletes are accounted for inside the index writer and therefor also by merge policies.
>     
> This change also adds a SoftDeletesRetentionMergePolicy that allows users to selectively
carry over soft_deleted document across merges for retention policies. The merge policy selects
documents that should be kept around in the merged segment based on a user provided query.



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