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scylladb/test
Patryk Jędrzejczak c406e1dd17 Merge '[Backport 2025.4] raft topology: fix group0 tombstone GC in the Raft-based recovery procedure' from Scylladb[bot]
Group0 tombstone GC considers only the current group 0 members
while computing the group 0 tombstone GC time. It's not enough
because in the Raft-based recovery procedure, there can be nodes
that haven't joined the current group 0 yet, but they have belonged
to a different group 0 and thus have a non-empty group 0 state ID.
The current code can cause a data resurrection in group 0 tables.

We fix this issue in this PR and add a regression test.

This issue was uncovered by `test_raft_recovery_entry_loss`, which
became flaky recently. We skipped this test for now. We will unskip
it in a following PR because it's skipped only on master, while we
want to backport this PR.

Fixes #26534

This PR contains an important bugfix, so we should backport it
to all branches with the Raft-based recovery procedure (2025.2
and newer).

- (cherry picked from commit 1d09b9c8d0)

- (cherry picked from commit 6b2e003994)

- (cherry picked from commit c57f097630)

Parent PR: #26612

Closes scylladb/scylladb#26682

* https://github.com/scylladb/scylladb:
  test: test group0 tombstone GC in the Raft-based recovery procedure
  group0_state_id_handler: remove unused group0_server_accessor
  group0_state_id_handler: consider state IDs of all non-ignored topology members
2025-10-27 10:15:49 +01:00
..

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.