[jira] [Created] (LUCENE-8293) Ensure only hard deletes are carried over in a merge

["Simon Willnauer (JIRA)" <ji...@apache.org>]

Simon Willnauer created LUCENE-8293:
---------------------------------------

             Summary: Ensure only hard deletes are carried over in a merge
                 Key: LUCENE-8293
                 URL: https://issues.apache.org/jira/browse/LUCENE-8293
             Project: Lucene - Core
          Issue Type: Bug
    Affects Versions: 7.4, master (8.0)
            Reporter: Simon Willnauer
             Fix For: 7.4, master (8.0)
         Attachments: LUCENE-8293.patch

Today we carry over hard deletes based on the SegmentReaders liveDocs.
    This is not correct if soft-deletes are used especially with rentention
    policies. If a soft delete is added while a segment is merged the document
    might end up hard deleted in the target segment. This isn't necessarily a
    correctness issue but causes unnecessary writes of hard-deletes. The biggest
    issue here is that we assert that previously deleted documents are still deleted
    in the live-docs we apply and that might be violated by the retention policy.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org