6337372b9d
The admission test has a section which tests admission when the semaphore has inactive reads. This section (and therefore the enire test) became flaky lately, after a seemingly unrelated seastar upgrade, which improved timers. The cause of the flakyness is the permit which is made inactive later: this permit is created with 0 timeout (times out immediately). For some time now, when the timeout timer of a permit fires, if the permit is inactive, it is evicted. This is what makes the test fail: the inactive read times out and ends up evicting this permit, which is not expected for the test. The reason this was not a problem before, is that the test finishes very quickly, usually, before the timer could even be polled by the reactor. The recent seastar changes changed this and now the timer sometimes get polled and fires, failing the test. Fixes: #19801 Closes scylladb/scylladb#19859
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.