Gary Russell created KAFKA-13147:
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Summary: connection-close-total Metric Keeps Incrementing While
Broker Down
Key: KAFKA-13147
URL: https://issues.apache.org/jira/browse/KAFKA-13147
Project: Kafka
Issue Type: Bug
Components: clients
Affects Versions: 2.8.0
Reporter: Gary Russell
When the broker is down, the {code}connection-close-total{code} keeps
incrementing with each connection event.
This makes it more difficult to determine connection health.
{code:java}
System.out.println("Open count: " + metrics.entrySet().stream()
.filter(entry ->
entry.getKey().name().equals("connection-creation-total"))
.map(entry -> entry.getValue().metricValue())
.collect(Collectors.toList()));
System.out.println("Close count: " + metrics.entrySet().stream()
.filter(entry -> entry.getKey().name().equals("connection-close-total"))
.map(entry -> entry.getValue().metricValue())
.collect(Collectors.toList()));
{code}
{noformat}
Open count: [1.0]
Close count: [0.0]
Open count: [3.0]
Close count: [0.0]
Open count: [3.0]
Close count: [8.0]
Open count: [3.0]
Close count: [13.0]
Open count: [3.0]
Close count: [17.0]
Open count: [3.0]
Close count: [22.0]
{noformat}
It would also be more useful if metrics for connection counts by node were
available.
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