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Benedict commented on CASSANDRA-6146:
-------------------------------------
I've pushed a version of these changes
[here|https://github.com/belliottsmith/cassandra/tree/6146-cqlstress]
I wanted to integrate the changes a bit more tightly with the old stress, so we
didn't seem to simply have two different stresses only nominally related. At
the same time I wanted to address a few things I felt were important to setup
so that future improvements are easy to introduce:
# We now generate partitions predictably, so when we perform queries we can be
sure we're using data that is relevant to the partition we're operating over
# We explicitly generate multi-row partitions, with configurable distirbution
of clustering components
# We can support multiple queries / inserts simultaneously in the new path
# The new path is executed with a more standard syntax (it's execute with
stress user, instead of stress write/read; can perform e.g. inserts/queries
with "stress user ops(insert=1,query=10)" for 90/10 read/write workload)
# I've switched configs to all support the range of distributions we could
previously (including for size, etc.)
# All old paths use the same partition generators as the new paths to keep
maintenance and extension simpler
# I've moved a few more config parameters into the yaml
Some other implications:
# To simplify matters and maintenance, I've stripped from the old paths support
for super columns, indexes and multi-gets, as we did not typically seem to
exercise these paths and these are probably best encapsulated with the new ones
# The old path now generates a lot more garbage, because the new path has to,
so it will be slightly higher overhead than it was previously. We also only
generate random data on the old path, so we may again see a decline in
performance
Some things still to do in near future; all of which reasonably easy but wanted
to limit scope of refactor:
# Support deletes
# Support partial inserts/deletes (currently insert only supports writing the
whole partition)
# Support query result validation
The diff is quite big, but I think a lot of the changes are due to package
movements.
> CQL-native stress
> -----------------
>
> Key: CASSANDRA-6146
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6146
> Project: Cassandra
> Issue Type: New Feature
> Components: Tools
> Reporter: Jonathan Ellis
> Assignee: T Jake Luciani
> Fix For: 2.1.1
>
> Attachments: 6146-v2.txt, 6146.txt, 6164-v3.txt
>
>
> The existing CQL "support" in stress is not worth discussing. We need to
> start over, and we might as well kill two birds with one stone and move to
> the native protocol while we're at it.
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