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dc6f6cb6b0
Performance tests such as `perf-fast-forward` are executed in our CI
environments in two steps (two invocations of the `scylla` process):
first by populating data directories (with `--populate` option), then by
running the actual test.
These tests are using `cql_test_env`, which did not load the previously
saved (in the populate step) Host ID of this node, but generated a new
one randomly instead.
In b39ca97919 we enabled
`consistent_cluster_management` by default. This caused the perf tests
to hang in `setup_group0` at `read_barrier` step. That's because Raft
group 0 was initialized with old configuration -- the one created during
the populate step -- but the Raft server was started with a newly
generated Host ID (which is used as the server's Raft ID), so the server
considered itself as being outside the configuration.
Fix this by reloading the Host ID from disk, simulating more closely the
behavior of main.cc initialization.
Fixes #14599
Closes #14640