dengziming commented on code in PR #13525:
URL: https://github.com/apache/kafka/pull/13525#discussion_r1161721906
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raft/src/test/java/org/apache/kafka/raft/internals/KafkaRaftMetricsTest.java:
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@@ -137,14 +137,14 @@ public void shouldRecordNonVoterQuorumState() throws
IOException {
state.initialize(new OffsetAndEpoch(0L, 0));
raftMetrics = new KafkaRaftMetrics(metrics, "raft", state);
- assertEquals("unattached", getMetric(metrics,
"current-state").metricValue());
+ assertEquals("observer", getMetric(metrics,
"current-state").metricValue());
assertEquals((double) -1L, getMetric(metrics,
"current-leader").metricValue());
assertEquals((double) -1L, getMetric(metrics,
"current-vote").metricValue());
assertEquals((double) 0, getMetric(metrics,
"current-epoch").metricValue());
assertEquals((double) -1L, getMetric(metrics,
"high-watermark").metricValue());
state.transitionToFollower(2, 1);
- assertEquals("follower", getMetric(metrics,
"current-state").metricValue());
+ assertEquals("observer", getMetric(metrics,
"current-state").metricValue());
Review Comment:
In our code design, observer/voter are the state of follower,
leader/candidate/voted/follower/unattached/Resigned are the state of raft node
state machine, so IMO, we'd better add "resigned" state instead of "observer"
state.
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