[GitHub] [rocketmq-exporter] cserwen opened a new issue #95: The hash calculation error causes the label of metrics not to be updated.

[GitBox <gi...@apache.org>]

cserwen opened a new issue #95:
URL: https://github.com/apache/rocketmq-exporter/issues/95


   **Describe the bug**
   When the consumer is closed, the `countOfOnlineConsumers` of metrhc: `rocketmq_group_diff` won't be changed to 0.
   
   **To Reproduce**
   Steps to reproduce the behavior:
   1. Start a consumer and running for a while.
   2. Shutdown it and you will see the value of `countOfOnlineConsumers` still is 1.
   
   **Expected behavior**
   The value of `countOfOnlineConsumers` should be 0.
   
   **Screenshots**
   
   
   **Additional context**
   The root cause is that the following code.
   https://github.com/apache/rocketmq-exporter/blob/85cf9058b9df3cc756562f59f3d27bd6efa9b8b0/src/main/java/org/apache/rocketmq/exporter/model/metrics/ConsumerTopicDiffMetric.java#L65
   The class `ConsumerTopicDiffMetric` has four fields:
   ```java
   private String group;
   private String topic;
   private String countOfOnlineConsumers;
   private String msgModel; //0:broadcast, 1:cluster
   ```
   It only calculates `topic` abd `group`. So when countOfOnlineConsumers changed, The new key will not be added. 
   


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[GitHub] [rocketmq-exporter] duhenglucky closed issue #95: The hash calculation error causes the label of metrics not to be updated.

[GitBox <gi...@apache.org>]

duhenglucky closed issue #95:
URL: https://github.com/apache/rocketmq-exporter/issues/95


   


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