If we're talking to just one replica, the digest is not going to be used,
so better not to calculate it at all. The optimization helps with
LOCAL_ONE queries where the result is large, but does not contain large
blobs (many small rows).
This patch adds a digest_algorithm parameter to the READ_DATA verb that
can take on two values: none and MD5 (default), and sets it to none when
we're reading from one replica.
In the future we may add other values for more hardware-friendly digest
algorithms.
Message-Id: <1479380600-19206-1-git-send-email-avi@scylladb.com>
This patch adds support to send a cell's ttl as part of a query's
result. This is needed for thrift support.
Signed-off-by: Duarte Nunes <duarte@scylladb.com>
The query result footprint for cassandra-stress mutation as reported
by tests/memory-footprint increased by 18% from 285 B to 337 B.
perf_simple_query shows slight regression in throughput (-8%):
build/release/tests/perf/perf_simple_query -c4 -m1G --partitions 100000
Before: ~433k tps
After: ~400k tps
