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https://issues.apache.org/jira/browse/KAFKA-13152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17779695#comment-17779695
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A. Sophie Blee-Goldman commented on KAFKA-13152:
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Hey [~sagarrao] – I'm happy to try and help you get this into 3.7. As a
disclaimer I do have a few other KIPs I've already promised to help land in 3.7
so this would be 3rd on my list, but we still have a good amount of time and
given the KIP itself is already accepted, I think we can make it.
Just give me a ping on the PR when it's ready for me to take a look. And just
to refresh my memory, all the caching work – both config and metrics -- are
already merged, so the only thing remaining is to add (and implement) the new
input.buffer.max.bytes config. Does that sound right?
> Replace "buffered.records.per.partition" & "cache.max.bytes.buffering" with
> "{statestore.cache}/{input.buffer}.max.bytes"
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-13152
> URL: https://issues.apache.org/jira/browse/KAFKA-13152
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Guozhang Wang
> Assignee: Sagar Rao
> Priority: Major
> Labels: kip
> Fix For: 3.7.0
>
>
> The current config "buffered.records.per.partition" controls how many records
> in maximum to bookkeep, and hence it is exceed we would pause fetching from
> this partition. However this config has two issues:
> * It's a per-partition config, so the total memory consumed is dependent on
> the dynamic number of partitions assigned.
> * Record size could vary from case to case.
> And hence it's hard to bound the memory usage for this buffering. We should
> consider deprecating that config with a global, e.g. "input.buffer.max.bytes"
> which controls how much bytes in total is allowed to be buffered. This is
> doable since we buffer the raw records in <byte[], byte[]>.
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