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>
This patch introduces memory_usage() to static_row, clustering_row and
range_tombstone so that we can avoid repeating sizeof(T) +
x.external_memory_usage().
Signed-off-by: Paweł Dziepak <pdziepak@scylladb.com>
Renaming the function to external_memory_usage() makes it clear that
sizeof(T) is not included, something that was a source of confusion in
the past.
Signed-off-by: Paweł Dziepak <pdziepak@scylladb.com>
Add to the range_tombstone_accumulator a range_tombstones_for_row(ck)
method.
Just like the existing tombstone_for_row(ck), this function drops from
the accumulator tombstones that end before ck. But while the existing
function returned just a single tombstone affecting the given row (the
most recent tombstone), the new function range_tombstones_for_row(ck)
returns all the accumulated range tombstones which cover ck.
This function will be useful for the promoted-index writing code later,
which divides a partition into blocks which may be read independently,
so each block needs to start with a repeat of the earlier tombstones
which still cover the first row in the new block.
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
range_tombstone::flip() flips range bounds. This is necessary in order
to use range tombstone in reversed mutation fragment streams.
Signed-off-by: Paweł Dziepak <pdziepak@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>
flip_bound_kind() changes start bound to end bound and vice versa while
preserving the inclusivness.
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>
