Ivan Babrou created KAFKA-6465:
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Summary: Add a metrics for the number of records per log
Key: KAFKA-6465
URL: https://issues.apache.org/jira/browse/KAFKA-6465
Project: Kafka
Issue Type: Bug
Reporter: Ivan Babrou
Currently there are log metrics for:
* Start offset
* End offset
* Size in bytes
* Number of segments
I propose to add another metric to track number of record batches in the log.
This should provide operators with an idea of how much batching is happening on
the producers. Having this metric in one place seems easier than scraping the
metric from each producer.
Having an absolute counter may be infeasible (batches are not assigned
sequential IDs), but gauge should be ok. Average batch size can be calculated
as (end offset - start offset) / number of batches. This will be heavily skewed
for logs with long retention, though.
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