ASF GitHub Bot commented on KAFKA-9431:

vinothchandar commented on pull request #7961: [KAFKA-9431] Expose API in 
KafkaStreams to fetch all local offset lags
URL: https://github.com/apache/kafka/pull/7961
    - Adds KafkaStreams#allLocalOffsetLags(), which returns lag information of 
all active/standby tasks local to a streams instance
    - LagInfo class encapsulates the current position in the changelog, 
endoffset in the changelog and their difference as lag
    - Lag information is a mere estimate; it can over-estimate (source topic 
optimization), or under-estimate.
    - Each call to allLocalOffsetLags() generates a metadata call to Kafka 
brokers, so caution advised
    - Unit and Integration tests added.
   ### Committer Checklist (excluded from commit message)
   - [ ] Verify design and implementation 
   - [ ] Verify test coverage and CI build status
   - [ ] Verify documentation (including upgrade notes)
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> Expose API in KafkaStreams to fetch all local offset lags
> ---------------------------------------------------------
>                 Key: KAFKA-9431
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9431
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: streams
>            Reporter: Vinoth Chandar
>            Assignee: Vinoth Chandar
>            Priority: Major
>             Fix For: 2.5.0

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