transport_exception is an interface implemented by both
cassandra_exception and protocol_exception. The logic implemented in
both these subclasses is identical.
This patch removes transport_exception and makes protocl_exception a
subclass of cassandra_exception.
Signed-off-by: Paweł Dziepak <pdziepak@cloudius-systems.com>
invalid_request_exceptions is one of the exceptions that should be
propagated to the client in form of a error code. That's why it should
belong to a hierarchy with cassandra_exception at root, so that all
exceptions like that can be easily caught and passed to the client.
Signed-off-by: Paweł Dziepak <pdziepak@cloudius-systems.com>
There are both marshal_exception (defined in types.hh) and
exceptions::marshal_exception (defined ini exceptions/exceptions.hh).
The latter is never thrown by anything but caught in few places which
obviously is incorrect.
Signed-off-by: Paweł Dziepak <pdziepak@cloudius-systems.com>
This patch adds initial support for PREPARE and EXECUTE requests which
are used by the CQL binary protocol for prepared statements. The use of
prepared statement gives a nice 2.5x single core performance boost for
Urchin:
$ ./build/release/seastar --data data --smp 1
$ ./tools/bin/cassandra-stress write -mode cql3 simplenative -rate threads=32
Results:
op rate : 31728
partition rate : 31728
row rate : 31728
latency mean : 1.0
latency median : 0.9
latency 95th percentile : 1.8
latency 99th percentile : 1.8
latency 99.9th percentile : 5.6
latency max : 181.7
Total operation time : 00:00:30
END
$ ./tools/bin/cassandra-stress write -mode cql3 simplenative prepared -rate threads=32
Results:
op rate : 75033
partition rate : 75033
row rate : 75033
latency mean : 0.4
latency median : 0.4
latency 95th percentile : 0.7
latency 99th percentile : 0.8
latency 99.9th percentile : 3.4
latency max : 205.0
Total operation time : 00:00:30
END
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
The class was converted to C++ in commit 6601e6a ("exceptions: Convert
SyntaxException and its base classes").
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
