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https://issues.apache.org/jira/browse/KAFKA-671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13566222#comment-13566222
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Sriram Subramanian commented on KAFKA-671:
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The issue is that even if we pass only the required fields from produceRequest
to DelayedProduce, we also pass the actual Request itself to delayedProduce
which is used in multiple places. Now that contains the requestObj and hence
there is a non zero reference to it still. Further, when sending the response
we depend on the requestObj at multiple places in updateRequestMetrics, one of
them being the requirement to log the complete request. We would have to do
some non trivial changes to be able to get rid of the request object completely
which would probably need to wait till a later time.
> DelayedProduce requests should not hold full producer request data
> ------------------------------------------------------------------
>
> Key: KAFKA-671
> URL: https://issues.apache.org/jira/browse/KAFKA-671
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8
> Reporter: Joel Koshy
> Assignee: Sriram Subramanian
> Priority: Blocker
> Labels: bugs, p1
> Fix For: 0.8.1
>
> Attachments: outOfMemFix-v1.patch, outOfMemFix-v2.patch,
> outOfMemFix-v2-rebase.patch, outOfMemFix-v3.patch
>
>
> Per summary, this leads to unnecessary memory usage.
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