e74a4b038f
This change supports changing replication factor in tablets-enabled keyspaces. This covers both increasing and decreasing the number of tablets replicas through first building topology mutations (`alter_keyspace_statement.cc`) and then tablets/topology/schema mutations (`topology_coordinator.cc`). For the limitations of the current solution, please see the docs changes attached to this PR. Fixes: #16129 Closes scylladb/scylladb#16723 * github.com:scylladb/scylladb: test: Do not check tablets mutations on nodes that don't have them test: Fix the way tablets RF-change test parses mutation_fragments test/tablets: Unmark RF-changing test with xfail docs: document ALTER KEYSPACE with tablets Return response only when tablets are reallocated cql-pytest: Verify RF is changes by at most 1 when tablets on cql3/alter_keyspace_statement: Do not allow for change of RF by more than 1 Reject ALTER with 'replication_factor' tag Implement ALTER tablets KEYSPACE statement support Parameterize migration_manager::announce by type to allow executing different raft commands Introduce TABLET_KEYSPACE event to differentiate processing path of a vnode vs tablets ks Extend system.topology with 3 new columns to store data required to process alter ks global topo req Allow query_processor to check if global topo queue is empty Introduce new global topo `keyspace_rf_change` req New raft cmd for both schema & topo changes Add storage service to query processor tablets: tests for adding/removing replicas tablet_allocator: make load_balancer_stats_manager configurable by name
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.