fdb2d2209c
This patch sets up an `alien_worker`, `advanced_rpc_compression::tracker`, `dict_sampler` and `dictionary_service` in `main()`, and wires them to each other and to `messaging_service`. `messaging_service` compresses its network traffic with compressors managed by the `advanced_rpc_compression::tracker`. All this traffic is passed as a single merged "stream" through `dict_sampler`. `dictionary_service` has access to `dict_sampler`. On chosen nodes (by default: the Raft leader), it uses the sampler to maintain a random multi-megabyte sample of the sampler's stream. Every several minutes, it copies the sample, trains a compression dictionary on it (by calling zstd's training library via the `alien_worker` thread) and publishes the new dictionary to `system.dicts` via Raft. This update triggers a callback into `advanced_rpc_compression::tracker` on all nodes, which updates the dictionary used by the compressors it manages.
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.