d7cfaf3f84
This patch changes the load balancing simulator so that it computes table load based on tablet sizes instead of tablet count. best_shard_overcommit measured minimal allowed overcommit in cases where the number of tablets can not be evenly distributed across all the available shards. This is still the case, but instead of computing it as an integer div_ceil() of the average shard load, it is now computed by allocating the tablet sizes using the largest-tablet-first method. From these, we can get the lowest overcommit for the given set of nodes, shards and tablet sizes.
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.