ci: fix TestNomad_BootstrapExpect_NonVoter test #14407
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PR #12130 refactored the test to use the `wantPeers` helper, but this function only returns the number of voting peers, which in this test should be equal to 2. I think the tests were passing back them because of a bug in Raft (hashicorp/raft#483) where a non-voting server was able to transition to candidate state. One possible evidence of this is that a successful test run would have the following log line: ``` raft@v1.3.5/raft.go:1058: nomad.raft: updating configuration: command=AddVoter server-id=127.0.0.1:9101 server-addr=127.0.0.1:9101 servers="[{Suffrage:Voter ID:127.0.0.1:9107 Address:127.0.0.1:9107} {Suffrage:Voter ID:127.0.0.1:9105 Address:127.0.0.1:9105} {Suffrage:Voter ID:127.0.0.1:9103 Address:127.0.0.1:9103} {Suffrage:Voter ID:127.0.0.1:9101 Address:127.0.0.1:9101}]" ``` This commit reverts the test logic to check for peer count, regardless of voting status.
tgross
approved these changes
Aug 30, 2022
nomad/serf_test.go
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| @@ -327,16 +326,35 @@ func TestNomad_BootstrapExpect_NonVoter(t *testing.T) { | |||
| }) | |||
| defer cleanupS4() | |||
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| servers := []*Server{s1, s2, s3, s4} | |||
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| // Join with fourth server (now have quorum) | |||
| // Start with 4th server for higher chance of success | |||
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This line of the comment is no longer relevant I think?
Suggested change
| // Start with 4th server for higher chance of success |
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Oh I didn't notice that the order was important. I pushed a commit to store the server in reverse order and moved this comment 👍
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I'm going to lock this pull request because it has been closed for 120 days ⏳. This helps our maintainers find and focus on the active contributions. |
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PR #12130 refactored the test to use the
wantPeershelper, but thisfunction only returns the number of voting peers, which in this test
should be equal to 2.
I think the tests were passing back them because of a bug in Raft
(hashicorp/raft#483) where a non-voting server
was able to transition to candidate state.
One possible evidence of this is that a successful test run would have
the following log line:
This commit reverts the test logic to check for peer count, regardless
of voting status.
I ran it a few times in CI and there were no failures in this test anymore.