Into total and live. Currently only live (those with live content) are
counted. Report live and total seprately, just like we do for rows. This
allows deducing the count of dead partitions as well, which is
particularly interesting for scans.
Closesscylladb/scylladb#26548
So tombstones can be purged correctly based on the tombstone gc mode.
Currently if repair-mode is used, tombstones are not purged at all,
which can lead to purged tombstone being re-replicated to replicas which
already purged them via read-repair.
This is not a correctness problem, tombstones are not included in data
query resutl or digest, these purgable tombstone are only a nuissance
for read repair, where they can create extra differences between
replicas. Note that for the read repair to trigger, some difference
other than in purgable tombstones has to exist, because as mentioned
above, these are not included in digets.
Fixes: scylladb/scylladb#24332Closesscylladb/scylladb#26351
The query namespace is used for symbols which span the coordinator and
replica, or that are mostly coordinator side. The querier is mainly in
this namespace due to its similar name, but this is a mistake which
confuses people. Now that the code was moved to replica/, also fix the
namespace to be namespace replica.
The querier object is a confusing one. Based on its name it should be in
the query/ module and it is already in the query namespace. But this is
actually a completely replica-side logic, implementing the caching of
the readers on the replica. Move it to the replica module to make this
more clear.
