View Consumer Group Details

Last updated: 2025-09-19 09:58:53

View Consumer Group Details

Last updated: 2025-09-19 09:58:53

By viewing consumer group details and status, users can monitor message processing progress in real time, identify consumption bottlenecks, optimize resource configuration, and ensure timely consumption of key business data.
Viewing Consumer Group Info
1. Log in to the CKafka console.
2. Click Instance List in the left sidebar. After selecting a region, click the ID of the target instance to go to the instance basic information page.
3. On the instance basic information page, click the Consumer Group tab to view the consumer group list under the instance.
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Parameter
Description
Consumer Group Name
Consumer Group Name.
Status
Current status of the consumption group.
Dead: No members in the consumption group and no metadata.
Empty: No members in the consumption group, but metadata exists. If all offsets in the group have expired, it becomes Dead. A newly created Group is in Empty status by default.
Note:
If all consumers in the consumption group are client types with self-management offset submission such as Flink or Spark, the status may display as Empty.
PreparingRebalance: Preparing to start Rebalance (for example, when consumers join or exit).
CompletingRebalance: All members join the consumption group.
Stable: Members in the consumption group can consume normally.
Protocol type
consumer: represents an ordinary consumer. Consumption records are saved in the server and subscription relationships are displayed normally in the console.
Note:
If the consumer uses Flink or Spark to consume in assign mode, the consumption record is stored by the client itself and will not be submitted to the server, so the subscription relationship will not be shown in the console.
Load Balancing Algorithm
Partition allocation policy for consumption group:
Range: Partition ranges are divided sequentially by partition number, with consecutive partitions assigned to each consumer.
RoundRobin: All partitions and consumers are allocated sequentially in a poll, ensuring an even distribution.
Sticky: Try to retain the existing assignment result and adjust only when necessary (such as when consumers scale), reducing partition migration cost.
Actions:
On the subscription relationship webpage, you can perform the following operations:
offset setting: Reset the consumption progress of a consumption group. For details, see Reset Consumption Progress.
View consumer details: View details of all consumers in a consumer group. For details, see View Consumer Group Details.
Delete consumer group: A consumer group can be deleted only when the Broker Version is not less than 1.1.1 and the state of the consumer group is Empty. For details, see Delete Consumer Group.
4. Click the small triangle on the left side of the consumer group name column to display the subscribed Topic info of the consumer group.
Parameter
Description
partition name
partition name
offset position of submission
Location of the last message successfully handled and confirmed by the consumption group.
maximum offset position
Location of the last stored message in the partition.
number of unconsumed messages
Total number of unconsumed messages in the partition.
Actions:
Click View Detail in the partition operation column to view the offset consumption situation at the partition level.
Note:
As the offset information is maintained on the consumer side, the offset position is subject to the way the consumer submits the offset. It is displayed asynchronously and does not necessarily represent real-time consumption conditions.
Viewing Consumer Information
1. Log in to the CKafka console.
2. Click Instance List in the left sidebar. After selecting a region, click the ID of the target instance to go to the instance basic information page.
3. On the instance basic information page, click the Consumer Group tab to view the consumer group list under the instance.
4. Click View Consumer Details in the operation bar of the consumer group to view consumer information, including the mapping between specific consumers and subscribed Topics.
Parameter
Description
memberID
The unique identifier of a consumer in a consumption group is usually in the format of consumer-xx-<UUID>, containing the consumer No. and random ID.
Client ID
The identifier of the consumer client is configured via the client.id parameter (generated by default).
Client Host
The host information for running the consumer application is in the format IP/host name:port.
Topic name
Consumer-subscribed Kafka Topic
Partition
The current partition number assigned to the specific consumer.
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Parameter	Description
Consumer Group Name	Consumer Group Name.
Status	Current status of the consumption group. Dead: No members in the consumption group and no metadata. Empty: No members in the consumption group, but metadata exists. If all offsets in the group have expired, it becomes Dead. A newly created Group is in Empty status by default. Note: If all consumers in the consumption group are client types with self-management offset submission such as Flink or Spark, the status may display as Empty. PreparingRebalance: Preparing to start Rebalance (for example, when consumers join or exit). CompletingRebalance: All members join the consumption group. Stable: Members in the consumption group can consume normally.
Protocol type	consumer: represents an ordinary consumer. Consumption records are saved in the server and subscription relationships are displayed normally in the console. Note: If the consumer uses Flink or Spark to consume in assign mode, the consumption record is stored by the client itself and will not be submitted to the server, so the subscription relationship will not be shown in the console.
Load Balancing Algorithm	Partition allocation policy for consumption group: Range: Partition ranges are divided sequentially by partition number, with consecutive partitions assigned to each consumer. RoundRobin: All partitions and consumers are allocated sequentially in a poll, ensuring an even distribution. Sticky: Try to retain the existing assignment result and adjust only when necessary (such as when consumers scale), reducing partition migration cost.
Actions:	On the subscription relationship webpage, you can perform the following operations: offset setting: Reset the consumption progress of a consumption group. For details, see Reset Consumption Progress. View consumer details: View details of all consumers in a consumer group. For details, see View Consumer Group Details. Delete consumer group: A consumer group can be deleted only when the Broker Version is not less than 1.1.1 and the state of the consumer group is Empty. For details, see Delete Consumer Group.

Parameter	Description
partition name	partition name
offset position of submission	Location of the last message successfully handled and confirmed by the consumption group.
maximum offset position	Location of the last stored message in the partition.
number of unconsumed messages	Total number of unconsumed messages in the partition.
Actions:	Click View Detail in the partition operation column to view the offset consumption situation at the partition level.

Parameter	Description
memberID	The unique identifier of a consumer in a consumption group is usually in the format of consumer-xx-<UUID>, containing the consumer No. and random ID.
Client ID	The identifier of the consumer client is configured via the client.id parameter (generated by default).
Client Host	The host information for running the consumer application is in the format `IP/host name:port`.
Topic name	Consumer-subscribed Kafka Topic
Partition	The current partition number assigned to the specific consumer.

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Viewing Consumer Group Info

Viewing Consumer Information