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https://issues.apache.org/jira/browse/KAFKA-5289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16017075#comment-16017075
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Ismael Juma commented on KAFKA-5289:
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Thanks for the report. Great catch. What kind of exceptions can
`shutdownIdleFetcherThreads()` throw?
> One StopReplicaRequest will caused two Responses
> ------------------------------------------------
>
> Key: KAFKA-5289
> URL: https://issues.apache.org/jira/browse/KAFKA-5289
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.10.0.0
> Reporter: xuzq
> Priority: Critical
> Attachments: handleStopReplicaRequest.png
>
>
> After discussed with my friend markTC，we find a bug.
> One StopReplicaRequest will caused two Responses.
> At core/src/main/scala/kafka/server/KafkaApi.class 175 and 176 lines.
> When an exception caused at
> 'replicaManager.replicaFetcherManager.shutdownIdleFetcherThreads()',
> will also return two responses.
> one is at 'requestChannel.sendResponse(new RequestChannel.Response(request,
> new ResponseSend(request.connectionId, responseHeader, response)))' and
> another at 'requestChannel.sendResponse(new Response(request, new
> ResponseSend(request.connectionId, respHeader, response)))'.
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