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Perform schema changes while mixing nodes in RECOVERY mode with nodes in group 0 mode: - schema changes originating from RECOVERY node use digest-based schema versioning. - schema changes originating from group 0 nodes use persisted versions committed through group 0. Verify that schema versions are in sync after each schema change, and that each schema change results in a different version. Also add a simple upgrade test, performing a schema change before we enable Raft (which also enables the new versioning feature) in the entire cluster, then once upgrade is finished. One important upgrade test is missing, which we should add to dtest: create a cluster in Raft mode but in a Scylla version that doesn't understand GROUP0_SCHEMA_VERSIONING. Then start upgrading to a version that has this patchset. Perform schema changes while the cluster is mixed, both on non-upgraded and on upgraded nodes. Such test is especially important because we're adding a new column to the `system.scylla_local` table (which we then redact from the schema definition when we see that the feature is disabled).
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.