Kafka · local bridge
Kafka consumer group diagnostics
Find growing lag, stuck partitions, uneven assignments, and unfamiliar consumers. Preview every offset change before applying it.
Group health
Refresh or sample every 5 seconds to see which offsets advance.
Partition lag
| Partition | Committed | Latest | Lag | Owner | Replication | Inspect |
|---|
Lag is the offset gap. Compacted or aborted records can make it different from a message count.
Around the committed position
The previous retained record and the next available record are clues. They do not prove which message failed in your application.
Move group offsets
Stop the consumer group first. Preview shows every partition’s current and new position; Kafka rejects changes if the group becomes active.
How to read the signals
The committed offset is the next position a consumer group will read. Lag compares it with the current end of each partition. A different member host, growing lag, or one unchanged commit is a lead to investigate, not proof of a root cause. Read the consumer lag guide for a worked example, or inspect exact Kafka records.