This short series prevents the creation of compaction tasks when we know in advance that they have nothing to do. This is possible in the clean path by: - improve the detection of candidates for cleanup by skipping sstables that require cleanup but are already being compacted - checking that list of sstables selected for cleanup isn't empty before creating the cleanup task For upgrade sstables, and generally when rewriting all sstable: launch the task only if the list off candidate sstables isn't empty. For regular compaction, when triggered via `table::add_sstable_and_update_cache`, we currently trigger compaction (by calling `submit`) on all compaction groups while the sstable is added only to one of them. Also, it is typically called for maintenance sstables that are awaiting offstrategy compaction, in which case we can skip calling `submit` entirely since the caller triggers offstrategy compaction at a later stage. Refs scylladb/scylladb#15673 Refs scylladb/scylladb#16694 Fixes scylladb/scylladb#16803 Closes scylladb/scylladb#16808 * github.com:scylladb/scylladb: table: add_sstable_and_update_cache: trigger compaction only in compaction group compaction_manager: perform_task_on_all_files: return early when there are no sstables to compact compaction_manager: perform_cleanup: use compaction_manager::eligible_for_compaction
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.