c24bc3b57a
A few months ago, in merge d3c1be9107,
we decided that if Scylla has the experimental "tablets" feature enabled,
new Alternator tables should use this feature by default - exactly like
this is the default for new CQL tables.
Sadly, it was now decided to reverse this decision: We do not yet trust
enough LWT on tablets, and since Alternator often (if not always) relies
on LWT, we want Alternator tables to continue to use vnodes - not tablets.
The fix is trivial - just changing the default. No test needed to change
because anyway, all Alternator tests work correctly on Scylla with the
tablets experimental feature disabled. I added a new test to enshrine
the fact that Alternator does not use tablets.
An unfortunate result of this patch will be that Alternator tables
created on versions with this patch (e.g., Scylla 6.0) will not use
tablets and will continue to not use tablets even if Scylla is upgraded
(currently, the use of tablets is decided at table creation time, and
there is no way to "upgrade" a vnode-based table to be tablet based).
This patch should be reverted as soon as LWT support matures on tablets.
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Closes scylladb/scylladb#18157
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.