Debug mode shuffles task position in the queue. So the following is possible: 1) shard 1 calls manual_clock::advance(). This expires timers on shard 1 and queues a background smp call to shard 0 which will expire timers there 2) the smp::submit_to(0, ...) from shard 1 called by the test sumbits the call 3) shard 0 creates tasks for both calls, but (2) is run first, and preempts the reactor 4) shard 1 sees the completion, completes m_svc.invoke_on(1, ..) 5) shard 0 inserts the completion from (4) before task from (1) 6) the check on shard 0: m.find(id1) fails because the timer is not expired yet To fix that, wait for timer expiration on shard 0, so that the test doesn't depend on task execution order. Note: I was not able to reproduce the problem locally using test.py --mode debug --repeat 1000. It happens in jenkins very rarely. Which is expected as the scenario which leads to this is quite unlikely. Fixes SCYLLADB-1265 Closes scylladb/scylladb#29290
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.