460cb1656e
The `test_max_cells` test was flaky due to `std::bad_alloc` caused by Seastar buddy allocator fragmentation. The root causes are: 1. The doubling loop with 24 iterations of CREATE/INSERT/DROP fragmented the allocator 2. The test built the whole batch as a single string that takes contiguous memory Also, some iterations inserted zero rows, but still did CREATE/DROP table which also contributed to the fragmentation. This patch series: - Skips iterations that insert zero rows - Creates the table once, truncates it after each test iteration - Switches to prepared statements Investigation results are presented in detail in https://scylladb.atlassian.net/browse/SCYLLADB-1645 Fixes SCYLLADB-1645 CI stability improvement. Backport to versions that have this test. Closes scylladb/scylladb#29759 * github.com:scylladb/scylladb: test: prepare max cells inserts test: reuse max cells schema test: limits: skip empty max cells iterations
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.