5891efc2ca
RF change of tablet keyspace starts tablet rebuilds. Even if any of the rebuilds is rolled back (because pending replica was excluded), rf change request finishes successfully. In this case we end up with the state of the replicas that isn't compatible with the expected keyspace replication. Modify topology coordinator so that if it were to be idle, it starts checking if there are any missing replicas. It moves to transition_state::tablet_migration and run required rebuilds. If a new RF change request encounters invalid state of replicas it fails. The state will be fixed later and the analogical ALTER KEYSPACE statement will be allowed. Fixes: SCYLLADB-109. Requires backport to all versions with tablet keyspace rf change. Closes scylladb/scylladb#28709 * github.com:scylladb/scylladb: test: add test_failed_tablet_rebuild_is_retried_on_alter test: add a test to ensure that failed rebuilds are retried service: fail ALTER KEYSPACE if replicas do not satisfy the replication service: retry failed tablet rebuilds service: maybe_start_tablet_migration returns std::optional<group0_guard>
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.