Marek Kowalski created COUCHDB-1887:
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Summary: Include rows with deleted=true in the changes feed with
filter=_view
Key: COUCHDB-1887
URL: https://issues.apache.org/jira/browse/COUCHDB-1887
Project: CouchDB
Issue Type: Improvement
Components: Database Core
Reporter: Marek Kowalski
I think it would be useful to add the notifications about the document
deletions to the changes feed with filter=_view. Currently it calls the map()
function for each the new revisions and emits the change notification only if
the map() function emits non-zero rows.
In case of the deleted documents, there is no data inside the document, so
typically there is no row emitted by map(). This way the change which
potentially changes the view index goes unnoticed.
My suggestion is to change handling of the deleted documents, so that the
previous revision is evaluated instead of the current one. If the previous
revision emitted a row and the current revision is a deletion the change
notification with deleted=true should be emitted.
Since it seems easy to develop I'd like to volunteer to do it, of course if its
not voted out.
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