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  1. Lucene - Core
  2. LUCENE-8198

Add ability to persist deletes across merges

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Won't Fix
    • 7.3, 8.0
    • None
    • None
    • None
    • New

    Description

      This allows conditionally persist deletes on a per document basis to prevent them from being merged away. This expert feature is useful to maintain history of documents in the index where otherwise a duplicate storage mechanism would be needed. For instance features like CouchDBs changes API can be build on top of persistent deletes. While using persistent deletes has a considerably small overhead at merge time or when deletes applied to fully deleted segments, there is no impact if persistent deletes are unused.

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            simonw Simon Willnauer
            simonw Simon Willnauer
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