Tomasz Grabiec 4fb3f7e8eb managed_vector: Make external_memory_usage() ignore reserved space ...

This ensures that row::external_memory_usage() is invariant to
insertion order of cells.

It should be so, so that accounting of a clustering_row, merged from
multiple MVCC versions by the partition_snapshot_flat_reader on behalf
of a memtable flush, doesn't give a greater result than what is used
by the memtable region. Overaccounting leads to assertion failure in
~flush_memory_accounter.

Fixes #3625 (hopefully).

Message-Id: <1535982513-19922-1-git-send-email-tgrabiec@scylladb.com>

2018-09-03 17:09:54 +03:00

7.6 KiB

Raw Blame History

View Raw