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https://issues.apache.org/jira/browse/SPARK-24863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon reassigned SPARK-24863:
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Assignee: Arun Mahadevan
> Report offset lag as a custom metrics for Kafka structured streaming source
> ---------------------------------------------------------------------------
>
> Key: SPARK-24863
> URL: https://issues.apache.org/jira/browse/SPARK-24863
> Project: Spark
> Issue Type: Sub-task
> Components: Structured Streaming
> Affects Versions: 2.4.0
> Reporter: Arun Mahadevan
> Assignee: Arun Mahadevan
> Priority: Major
> Fix For: 2.4.0
>
>
> We can build on top of SPARK-24748 to report offset lag as a custom metrics
> for Kafka structured streaming source.
> This is the difference between the latest offsets in Kafka the time the
> metrics is reported (just after a micro-batch completes) and the latest
> offset Spark has processed. It can be 0 (or close to 0) if spark keeps up
> with the rate at which messages are ingested into Kafka topics in steady
> state.
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