153 lines
4.3 KiB
Plaintext
153 lines
4.3 KiB
Plaintext
# Regression test that verifies that learners can vote. This holds only in the
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# sense that if a learner is asked to vote, a candidate believes that they are a
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# voter based on its current config, which may be more recent than that of the
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# learner. If learners which are actually voters but don't know it yet don't
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# vote in that situation, the raft group may end up unavailable despite a quorum
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# of voters (as of the latest config) being available.
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#
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# See:
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# https://github.com/etcd-io/etcd/pull/10998
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# Turn output off during boilerplate.
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log-level none
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----
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ok
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# Bootstrap three nodes.
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add-nodes 3 voters=(1,2) learners=(3) index=2
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----
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ok
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# n1 gets to be leader.
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campaign 1
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----
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ok
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stabilize
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----
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ok (quiet)
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# Propose a conf change on n1 that promotes n3 to voter.
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propose-conf-change 1
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v3
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----
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ok
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# Commit and fully apply said conf change. n1 and n2 now consider n3 a voter.
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stabilize 1 2
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----
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ok (quiet)
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# Drop all inflight messages to 3. We don't want it to be caught up when it is
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# asked to vote.
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deliver-msgs drop=(3)
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----
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ok (quiet)
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# We now pretend that n1 is dead, and n2 is trying to become leader.
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log-level debug
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----
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ok
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campaign 2
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----
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INFO 2 is starting a new election at term 1
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INFO 2 became candidate at term 2
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INFO 2 received MsgVoteResp from 2 at term 2
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INFO 2 [logterm: 1, index: 4] sent MsgVote request to 1 at term 2
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INFO 2 [logterm: 1, index: 4] sent MsgVote request to 3 at term 2
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# Send out the MsgVote requests.
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process-ready 2
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----
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Ready MustSync=true:
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Lead:0 State:StateCandidate
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HardState Term:2 Vote:2 Commit:4
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Messages:
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2->1 MsgVote Term:2 Log:1/4
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2->3 MsgVote Term:2 Log:1/4
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# n2 is now campaigning while n1 is down (does not respond). The latest config
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# has n3 as a voter, but n3 doesn't even have the corresponding conf change in
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# its log. Still, it casts a vote for n2 which can in turn become leader and
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# catches up n3.
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stabilize 3
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----
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> 3 receiving messages
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2->3 MsgVote Term:2 Log:1/4
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INFO 3 [term: 1] received a MsgVote message with higher term from 2 [term: 2]
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INFO 3 became follower at term 2
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INFO 3 [logterm: 1, index: 3, vote: 0] cast MsgVote for 2 [logterm: 1, index: 4] at term 2
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> 3 handling Ready
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Ready MustSync=true:
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Lead:0 State:StateFollower
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HardState Term:2 Vote:2 Commit:3
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Messages:
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3->2 MsgVoteResp Term:2 Log:0/0
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stabilize 2 3
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----
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> 2 receiving messages
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3->2 MsgVoteResp Term:2 Log:0/0
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INFO 2 received MsgVoteResp from 3 at term 2
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INFO 2 has received 2 MsgVoteResp votes and 0 vote rejections
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INFO 2 became leader at term 2
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> 2 handling Ready
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Ready MustSync=true:
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Lead:2 State:StateLeader
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Entries:
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2/5 EntryNormal ""
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Messages:
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2->1 MsgApp Term:2 Log:1/4 Commit:4 Entries:[2/5 EntryNormal ""]
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2->3 MsgApp Term:2 Log:1/4 Commit:4 Entries:[2/5 EntryNormal ""]
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> 3 receiving messages
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2->3 MsgApp Term:2 Log:1/4 Commit:4 Entries:[2/5 EntryNormal ""]
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DEBUG 3 [logterm: 0, index: 4] rejected MsgApp [logterm: 1, index: 4] from 2
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> 3 handling Ready
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Ready MustSync=false:
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Lead:2 State:StateFollower
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Messages:
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3->2 MsgAppResp Term:2 Log:0/4 Rejected (Hint: 3)
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> 2 receiving messages
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3->2 MsgAppResp Term:2 Log:0/4 Rejected (Hint: 3)
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DEBUG 2 received MsgAppResp(MsgApp was rejected, lastindex: 3) from 3 for index 4
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DEBUG 2 decreased progress of 3 to [StateProbe match=0 next=4]
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> 2 handling Ready
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Ready MustSync=false:
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Messages:
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2->3 MsgApp Term:2 Log:1/3 Commit:4 Entries:[1/4 EntryConfChangeV2 v3, 2/5 EntryNormal ""]
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> 3 receiving messages
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2->3 MsgApp Term:2 Log:1/3 Commit:4 Entries:[1/4 EntryConfChangeV2 v3, 2/5 EntryNormal ""]
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> 3 handling Ready
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Ready MustSync=true:
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HardState Term:2 Vote:2 Commit:4
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Entries:
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1/4 EntryConfChangeV2 v3
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2/5 EntryNormal ""
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CommittedEntries:
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1/4 EntryConfChangeV2 v3
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Messages:
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3->2 MsgAppResp Term:2 Log:0/5
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INFO 3 switched to configuration voters=(1 2 3)
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> 2 receiving messages
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3->2 MsgAppResp Term:2 Log:0/5
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> 2 handling Ready
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Ready MustSync=false:
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HardState Term:2 Vote:2 Commit:5
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CommittedEntries:
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2/5 EntryNormal ""
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Messages:
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2->3 MsgApp Term:2 Log:2/5 Commit:5
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> 3 receiving messages
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2->3 MsgApp Term:2 Log:2/5 Commit:5
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> 3 handling Ready
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Ready MustSync=false:
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HardState Term:2 Vote:2 Commit:5
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CommittedEntries:
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2/5 EntryNormal ""
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Messages:
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3->2 MsgAppResp Term:2 Log:0/5
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> 2 receiving messages
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3->2 MsgAppResp Term:2 Log:0/5
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