ccbb9f5343
We want to clear CDC generations that are no longer needed (because all writes are already using a new generation) so they don't take space and are not sent during snapshot transfers (see e.g. https://github.com/scylladb/scylladb/issues/17545). The condition used previously was that we clear generations which were closed (i.e., a new generation started at this time) more than 24h ago. This is a safe choice, but too conservative: we could easily end up with a large number of obsolete generations if we boot multiple nodes during 24h (which is especially easy to do with tablets.) Change this bound from 24h to `5s + ring_delay`. The choice is explained in a comment in the code. Additionally, improve `test_raft_snapshot_request` that would become flaky after the change so it's not sensitive to changes anymore. The raft-based topology was experimental before 6.0, no need to backport. Ref: scylladb/scylladb#17545 Closes scylladb/scylladb#18497 * github.com:scylladb/scylladb: topology_coordinator: clear obsolete generations earlier test: test_raft_snapshot_request: improve the last assertion test: test_raft_snapshot_request: find raft leader after restart test: test_raft_shanpshot_request: simplify appended_command
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++ cql-pytest - 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.