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https://issues.apache.org/jira/browse/STORM-2357?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stig Rohde Døssing resolved STORM-2357.
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Resolution: Fixed
Fix Version/s: 1.2.0
> add At-Most-Once guarantee in KafkaSpout
> ----------------------------------------
>
> Key: STORM-2357
> URL: https://issues.apache.org/jira/browse/STORM-2357
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-kafka-client
> Reporter: Xu Mingmin
> Assignee: Stig Rohde Døssing
> Fix For: 2.0.0, 1.2.0
>
>
> KafkaSpout cannot guarantee exactly at-most-once semantic, as it commits
> offset periodically, and KafkaSpout.close() is not guarantee to call when a
> crash happens.
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