Before this patch when writing an index block, the sstables writer was
storing range tombstones that span the boundary of the block in order
of end bounds. This led to a range tombstone being ignored by a reader
if there was a row tombstone inside it.
This patch sorts the range tombstones based on start bound before
writing them to the index file.
The assumption is that writing an index block is rare so we can afford
sortting the tombstones at that point. Additionally this is a writer of
an old format and writing to it will be dropped in the next major
release so it should be rarely used already.
Kudos to Kamil Braun <kbraun@scylladb.com> for finding the reproducer.
Test: unit(dev)
Fixes#9690
Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
(cherry picked from commit scylladb/scylla-enterprise@eb093afd6f)
ab425a11a8