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https://github.com/scylladb/scylladb.git
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7b30d31d77
Test raft configuration changes:
a node with empty configuration, transitioning
to an entirely different cluster, transitioning
in presence of down nodes, leader change during
configuration change, stray replies, etc.
* scylla-dev/raft-empty-confchange-v5: (21 commits)
raft: (testing) stray replies from removed followers
raft: always return a non-zero configuration index from the log
raft: (testing) leader change during configuration change
raft: (testing) test confchange {ABCDE} -> {ABCDEFG}
raft: (testing) test confchange {ABCDEF} -> {ABCGH}
raft: (testing) test confchange {ABC} -> {CDE}
raft: (testing) test confchange {AB} -> {CD}
raft: (testing) test confchange {A} -> {B}
raft: (testing) test a server with empty configuration
raft: (testing) introduce testing utilities
raft: (testing) simplify id allocation in test
raft: (testing) add select_leader() helper
raft: (testing) introduce communicate() helper
raft: (testing) style cleanup in raft_fsm_test
raft: (testing) fix bug in election_threshold
raft: minor style changes & comments
raft: do not assert when transitioning to empty config
raft: assert we never apply a snapshot over uncommitted entries (leader)
raft: improve tracing
raft: add fsm_output::empty() helper to aid testing
...