Right now reversed streamed mutation emits range tombstones after the
mutation fragments affected by them. This breakes the queries.
This patch reworks the way range tombstones are handled in reversed
streams:
- range tombstones are no longer flipped -- invariant that start bound
is smaller than the end bound always holds
- in reversed streams they are ordered by their end_position()
Fixes#2982.
range_tombstone_accumulator::apply() now takes a value so the caller
can decide whether to move or copy the argument.
Signed-off-by: Duarte Nunes <duarte@scylladb.com>
range_tombstone_accumulator is a helper class that allows determining
tombstone for a clustering row when range tombstones and clustering rows
are streamed from streamed_mutation.
Signed-off-by: Paweł Dziepak <pdziepak@scylladb.com>
range_tombstone::apply() allows merging two, possibly overlapping, range
tombstones with the same start bound and produces one or two disjoint
range tombstones as a result.
It is intended to be used for merging tombstones coming from different
sources.
Signed-off-by: Paweł Dziepak <pdziepak@scylladb.com>
This patch introduces the range_tombstone class, composed of
a [start, end] pair of clustering_key_prefixes, the type
of inclusiveness of each bound, and a tombstone.
Signed-off-by: Duarte Nunes <duarte@scylladb.com>
