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The following steps are performed in sequence as part of the Raft-based recovery procedure: - set `recovery_leader` to the host ID of the recovery leader in `scylla.yaml` on all live nodes, - send the `SIGHUP` signal to all Scylla processes to reload the config, - perform a rolling restart (with the recovery leader being restarted first). These steps are not intuitive and more complicated than they could be. In this PR, we simplify these steps. From now on, we will be able to simply set `recovery_leader` on each node just before restarting it. Apart from making necessary changes in the code, we also update all tests of the Raft-based recovery procedure and the user-facing documentation. Fixes scylladb/scylladb#25015 The Raft-based procedure was added in 2025.2. This PR makes the procedure simpler and less error-prone, so it should be backported to 2025.2 and 2025.3. - (cherry picked from commitec69028907) - (cherry picked from commit445a15ff45) - (cherry picked from commit23f59483b6) - (cherry picked from commitba5b5c7d2f) - (cherry picked from commit9e45e1159b) - (cherry picked from commitf408d1fa4f) Parent PR: #25032 Closes scylladb/scylladb#25335 * https://github.com/scylladb/scylladb: docs: document the option to set recovery_leader later test: delay setting recovery_leader in the recovery procedure tests gossip: add recovery_leader to gossip_digest_syn db: system_keyspace: peers_table_read_fixup: remove rows with null host_id db/config, gms/gossiper: change recovery_leader to UUID db/config, utils: allow using UUID as a config option
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.