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ASF subversion and git services commented on LUCENE-8198: --------------------------------------------------------- Commit b627fae03215fe52dee70638299e0b7c62b79c99 in lucene-solr's branch refs/heads/branch_7x from [~simonw] [ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=b627fae ] LUCENE-8200: Allow doc-values to be updated atomically together with a document Today we can only update a document by deleting all previously indexed documents for the given term. In some cases like when deletes are not `final` in the way that documents that are marked as deleted should not be merged away a `soft-delete` is needed which is possible when doc-values updatea can be done atomically just like delete and add in updateDocument(s) This change introduces such a soft update that reuses all code paths from deletes to update all previously updated documents for a given term instead of marking it as deleted. This is a spinnoff from LUCENE-8198 > Add ability to persist deletes across merges > -------------------------------------------- > > Key: LUCENE-8198 > URL: https://issues.apache.org/jira/browse/LUCENE-8198 > Project: Lucene - Core > Issue Type: Improvement > Affects Versions: 7.3, master (8.0) > Reporter: Simon Willnauer > Assignee: Simon Willnauer > Priority: Major > Attachments: LUCENE-8198.patch > > > 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. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org