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https://issues.apache.org/jira/browse/KAFKA-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mayuresh Gharat resolved KAFKA-2975.
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Resolution: Not A Problem
> The newtorkClient should request a metadata update after it gets an error in
> the handleResponse()
> -------------------------------------------------------------------------------------------------
>
> Key: KAFKA-2975
> URL: https://issues.apache.org/jira/browse/KAFKA-2975
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Reporter: Mayuresh Gharat
> Assignee: Mayuresh Gharat
>
> Currently in data pipeline,
> 1) Lets say Mirror Maker requestTimeout is set to 2 min and metadataExpiry is
> set to 5 min
> 2) We delete a topic, the Mirror Maker get UNKNOWN_TOPIC_PARTITION and tries
> torefresh its Metadata.
> 3) It gets LeaderNotAvailableException, may be because the topic is not
> created yet.
> 4) Now its metadata does not have any information about that topic.
> 5) It will wait for 5 min to do the next refresh.
> 6) In the mean time the batches sitting in the accumulator will expire and
> the mirror makers die to avoid data loss.
> To overcome this we need to refresh the metadata after 3).
> Well there is an alternative solution to have the metadataExpiry set to be
> less then requestTimeout, but this will mean we make more metadataRequest
> over the wire in normal scenario as well.
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