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https://issues.apache.org/jira/browse/TEZ-4455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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László Bodor resolved TEZ-4455.
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Resolution: Fixed
> Add LoggingHandler in ShuffleHandler pipeline for better debuggability
> ----------------------------------------------------------------------
>
> Key: TEZ-4455
> URL: https://issues.apache.org/jira/browse/TEZ-4455
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Dmitriy Fingerman
> Assignee: Dmitriy Fingerman
> Priority: Major
> Fix For: 0.10.3
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> [https://github.com/apache/tez/blob/8bb27b845ce103b8d02a9a9d7fe2a1af10097e9c/tez-plugins/tez-aux-services/src/main/java/org/apache/tez/auxservices/ShuffleHandler.java#L598]
>
> For corner case debugging, it would be helpful to understand when netty
> processed OPEN/BOUND/CLOSE/RECEIVED/CONNECTED events along with payload
> details.
> Adding "LoggingHandler" in ChannelPipeline mode can help in debugging.
>
> An equivalent change was added to Hive recently
> https://issues.apache.org/jira/browse/HIVE-23754
> Now adding similar improvement to Tez.
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