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  1. Lucene - Core
  2. LUCENE-8198

Add ability to persist deletes across merges

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 7.3, master (8.0)
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Lucene Fields:
      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.

        Attachments

        1. LUCENE-8198.patch
          71 kB
          Simon Willnauer

          Activity

            People

            • Assignee:
              simonw Simon Willnauer
              Reporter:
              simonw Simon Willnauer
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              Dates

              • Created:
                Updated:
                Resolved: