d3d07331b3
Consider the following: 1) balancer emits split decision 2) split compaction starts 3) split decision is revoked 4) emits merge decision 5) completes merge, before compaction in step 2 finishes After last step, split compaction initiated in step 2 can fail because it works with the global tablet map, rather than the map when the compaction started. With the global state changing under its feet, on merge, the mutation splitting writer will think it's going backwards since sibling tablets are merged. This problem was also seen when running load-and-stream, where split initiated by the sstable writer failed, split completed, and the unsplit sstable is left in the table dir, causing problems in the restart. To fix this, let's make split compaction always work with the state when it started, not a global state. Fixes #24153. All 2025.* versions are vulnerable, so fix must be backported to them. - (cherry picked from commit0c1587473c) - (cherry picked from commit68f23d54d8) Parent PR: #25690 Closes scylladb/scylladb#25934 * github.com:scylladb/scylladb: replica: Fix split compaction when tablet boundaries change replica: Futurize split_compaction_options()
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.