8fd50a207b
This series adds support for WCU tracking in batch_write_item and tests it. The patches include: Switch the metrics (RCU and WCU) to count units vs half-units as they were, to make the metrics clearer for users. Adding a public static get_half_units function to wcu_consumed_capacity_counter for use by batch write item, which cannot directly use the counter object. Adding WCU calculation support to batch_write_item, based on item size for puts and a fixed 1 WCU for deletes. WCU metrics are updated, and consumed capacity is returned per table when requested. The return handling was refactored to be coroutine-like for easier management of the consumed capacity array. Adding tests that validate WCU calculation for batch put requests on a single table and across multiple tables, ensuring delete operations are counted correctly. Adding a test that validates that WCU metrics are updated correctly during batch write item operations, ensuring the WCU of each item is calculated independently. Need backport, WCU is partially supported, and is missing from batch_write_item Fixes https://github.com/scylladb/scylladb/issues/23940 (cherry picked from commit5ae11746fa) (cherry picked from commitf2ade71f4f) (cherry picked from commit68db77643f) (cherry picked from commit14570f1bb5) (cherry picked from commit2ab99d7a07) Parent PR: https://github.com/scylladb/scylladb/pull/23941 Replaces #24028 Closes scylladb/scylladb#24034 * github.com:scylladb/scylladb: alternator/test_metrics.py: batch_write validate WCU alternator/test_returnconsumedcapacity.py: Add tests for batch write WCU alternator/executor: add WCU for batch_write_items alternator/consumed_capacity: make wcu get_units public Alternator: Change the WCU/RCU to use units
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.