To improve balancing when reading in 1 < CL < ALL This implementation has a moderate impact on the function performance in contrast to full std::shuffle of the vector before stable_sort:ing it (especially with large number of nodes to sort). Before: test iterations median mad min max allocs tasks inst cycles sort_by_proximity_topology.perf_sort_by_proximity 25541973 39.225ns 0.114ns 38.966ns 39.339ns 0.000 0.000 588.5 116.6 After: sort_by_proximity_topology.perf_sort_by_proximity 19689561 50.195ns 0.119ns 50.076ns 51.145ns 0.000 0.000 622.5 150.6 Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
Scylla in-source tests.
For details on how to run the tests, see docs/dev/testing.md
Shared C++ utils, libraries are in lib/, for Python - pylib/
alternator - Python tests which connect to a single server and use the DynamoDB API unit, boost, raft - unit tests in C++ cqlpy - Python tests which connect to a single server and use CQL topology* - tests that set up clusters and add/remove nodes cql - approval tests that use CQL and pre-recorded output rest_api - tests for Scylla REST API Port 9000 scylla-gdb - tests for scylla-gdb.py helper script nodetool - tests for C++ implementation of nodetool
If you can use an existing folder, consider adding your test to it. New folders should be used for new large categories/subsystems, or when the test environment is significantly different from some existing suite, e.g. you plan to start scylladb with different configuration, and you intend to add many tests and would like them to reuse an existing Scylla cluster (clusters can be reused for tests within the same folder).
To add a new folder, create a new directory, and then
copy & edit its suite.ini.