Botond Dénes

Don't merge, new version is coming.

v2: rewrite the commit message, @bitpathfinder helped me understand what really happens - not use-after-free, but multiple iterations on a non-reentrant range.

> > v2: rewrite the commit message, @bitpathfinder helped me understand what really happens - not use-after-free, but multiple iterations on a non-reentrant range. > > Didn't you say we...

Updated commit message.

> [test_mv_topology_change.dev.3](https://jenkins.scylladb.com//job/scylla-master/job/scylla-ci/13899/testReport/junit/topology_custom/test_mv_topology_change/Tests___Unit_Tests___test_mv_topology_change_dev_3) [🔍](https://github.com/scylladb/scylladb/issues?q=is:issue+is:open+test_mv_topology_change.dev.3) https://github.com/scylladb/scylladb/issues/21912.

> [test_data_is_segregated_during_off_strategy](https://jenkins.scylladb.com//job/scylla-master/job/scylla-ci/13934/testReport/junit/compaction_additional_test/TestTimeWindowDataSegregation/Tests___dtest_with_topology_changes___test_data_is_segregated_during_off_strategy) [🔍](https://github.com/scylladb/scylladb/issues?q=is:issue+is:open+test_data_is_segregated_during_off_strategy) https://github.com/scylladb/scylladb/issues/21977

New in v3: updated commit in the code

I will add a test too.

New in v4: * rebased * added test

> #### 🔴 CI State: FAILURE > > ✅ - [Build](https://jenkins.scylladb.com/job/scylla-master/job/scylla-ci/15192/) ✅ - [Unit Tests Custom](https://jenkins.scylladb.com/job/scylla-master/job/scylla-ci/15192/) **The following new/updated tests ran 100 times for each mode:** 🔹 topology_custom/test_read_repair ❌ -...