834f506790
For the limited voters feature to work properly we need to make sure that we are only managing the voter status through the topology coordinator. This means that we should not change the node votership from the storage_service module for the raft topology directly. We can drop the voter status changes from the storage_service module because the topology coordinator will handle the votership changes eventually. The calls in the storage_service module were not essential and were only used for optimization (improving the HA under certain conditions). This has effect on the timing in the tablets migration test though, as it relied on the node being made non-voter from the service_storage `raft_removenode()` function. The fix is to add another server to the topology to make sure we will keep the quorum. Previously the test worked because the test waits for an injection to be reached and it was ensured that the injection (log line) has only been triggered after the node has been made non-voter from the `raft_removenode()`. This is not the case anymore. An alternative fix would be to wait for the first node to be made non-voter before stopping the second server, but this would make the test more complex (and it is not strictly required to only use 4 servers in the test, it has been only done for optimization purposes). Fixes: scylladb/scylladb#22860 Refs: scylladb/scylladb#18793 Refs: scylladb/scylladb#21969
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.