Pekka Enberg d04c41d8a8 transport: CQL prepared statements ...

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>

2015-03-19 15:54:46 +02:00

..

exceptions.hh

transport: CQL prepared statements

2015-03-19 15:54:46 +02:00

unrecognized_entity_exception.hh

cql3: Convert Relation

2015-02-04 10:29:00 +01:00