Gerard,
We haven't done a test on Calliope vs a driver.
The thing is Calliope builds on C* thrift (and latest build on DS driver)
and the performance in terms of simple write will be similar to any
existing driver. But then that is not the use case for Calliope.
It is built to be used from
Gerard,
Strings in particular are very inefficient because they're stored in a
two-byte format by the JVM. If you use the Kryo serializer and have use
StorageLevel.MEMORY_ONLY_SER then Kryo stores Strings in UTF8, which for
ASCII-like strings will take half the space.
Andrew
On Tue, Jun 17,
Hi,
I've been doing some testing with Calliope as a way to do batch load from
Spark into Cassandra.
My initial results are promising on the performance area, but worrisome on
the memory footprint side.
I'm generating N records of about 50 bytes each and using the UPDATE
mutator to insert them
