5f74b5fdff
Since mid December, tests started failing with ENOMEM while submitting I/O requests. Logs of failed tests show IO uring was used as backend, but we never deliberately switched to IO uring. Investigation pointed to it happening accidentaly in commit1bac6b75dc, which turned on IO uring for allowing native tool in production, and picked linux-aio backend explicitly when initializing Scylla. But it missed that seastar-based tests would pick the default backend, which is io_uring once enabled. There's a reason we never made io_uring the default, which is that it's not stable enough, and turns out we made the right choice back then and it apparently continue to be unstable causing flakiness in the tests. Let's undo that accidental change in tests by explicitly picking the linux-aio backend for seastar-based tests. This should hopefully bring back stability. Refs #21968. Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com> Closes scylladb/scylladb#22695 (cherry picked from commitce65164315) Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com> Closes scylladb/scylladb#22800
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.