Details
Major Description
Today if soft deletes are used we expose a union of hard and soft deletes
via LeafReader#getLiveDocs. Yet, if a users wants to take advantage of
searching also soft-deleted documents the only option today is to search
all documents even though some of them are hard deleted. The recommendation
is to not mix those but in exceptional cases ie. when a document hits a
non-aborting exception during indexing the document is marked as hard
deleted which is the correct action. In order to filter those out having
access to the hard live docs on the segment reader level allows to filter out
these documents.