384bffb8da
This PR adds support for limiting the maximum shares allocated to a compaction scheduling class by the compaction controller. It introduces a new configuration parameter, compaction_max_shares, which, when set to a non zero value, will cap the shares allocated to compaction jobs. This PR also exposes the shares computed by the compaction controller via metrics, for observability purposes. Fixes https://github.com/scylladb/scylladb/issues/9431 Enhancement. No need to backport. NOTE: Replaces PR https://github.com/scylladb/scylladb/pull/26696 Ran a test in which the backlog raised the need for max shares (normalized backlog above normalization_factor), and played with different values for new option compaction_max_shares to see it works (500, 1000, 2000, 250, 50) Closes scylladb/scylladb#27024 * github.com:scylladb/scylladb: db/config: introduce new config parameter `compaction_max_shares` compaction_manager:config: introduce max_shares compaction_controller: add configurable maximum shares compaction_controller: introduce `set_max_shares()`
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.