How Do I View the Number of Accumulated Messages?

View the number of accumulated messages using any of the following methods:

• On the Consumer Groups page of an instance, click the name of the consumer group whose accumulated messages are to be viewed. The consumer group details page is displayed. On the Consumer Offset tab page, view the number of messages accumulated in each topic of your target consumer group. For details, see Viewing Consumer Offsets.
• On the Monitoring and Alarms > Monitoring Details tab page of an instance, click the By Consumer Group tab. Select the desired consumer group for Consumer Group and All topics for Topic. The Consumer Available Messages metric reflects the number of messages accumulated in all topics of this consumer group. For details about viewing the monitoring data, see Viewing Kafka Metrics.
• On the Consumer Groups tab page of the Cloud Eye console, click the By Consumer Group tab. Select the desired consumer group for Consumer Group and All topics for Topic. The Consumer Available Messages metric reflects the number of messages accumulated in all topics of this consumer group. For details about viewing the monitoring data, see Viewing Kafka Metrics.
• In the /bin directory on the Kafka client, run command kafka-consumer-groups.sh --bootstrap-server ${connection-address} --describe --group ${consumer-group-name} to check number of accumulated messages of each topic in a consumer group. LAG indicates the total number of messages accumulated in each topic.
  Figure 1 Viewing the total number of messages accumulated in each topic
  

  If SASL authentication is enabled for the Kafka instance, the --command-config {SASL authentication configuration file consumer.properties} parameter must be added to the preceding commands. For details about the configuration file consumer.properties, see the CLI access instructions provided in Connecting to Kafka Using the Client (SASL Enabled).