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https://issues.apache.org/jira/browse/FLINK-13235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen closed FLINK-13235.
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Resolution: Duplicate
Duplicate of FLINK-15306
> Change the Netty default transport mode to auto
> -----------------------------------------------
>
> Key: FLINK-13235
> URL: https://issues.apache.org/jira/browse/FLINK-13235
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Network
> Reporter: zhijiang
> Assignee: zhijiang
> Priority: Minor
>
> The current default config for "taskmanager.net.transport" in
> NettyShuffleEnvironmentOptions is "NIO". In order to use "EPOLL" mode which
> has better performance and is recommended when available, we could change the
> default config as "AUTO". Then the "NIO" mode is used as a fallback.
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