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In tablets mode, it is not allowed to CREATE a table if replication factor can be satisfied. E.g. if the keyspace is defined to have replication_factor = 3 and there are only 2 replicas, in vnodes mode one still can CREATE the table and write to it, whereas in tablets mode one gets an error. The confusion is what 'replication_factor' means. When NetworkTopologyStrategy is used, in multi-dc mode, each DC must have at least 'replication_factor' replicas and stores 'replication_factor' copies of data. The test author (as well as the author of this "fix", see my confused report of gh-21166) assumed that 'replication_factor' means the total number of replicas, not the number of replicas per DC. Correct the test to use only one replica per DC, as this is the topology the test is working with. The test is not specific to the number of replicas, so the change does not impact the logic of the test.
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.