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https://issues.apache.org/jira/browse/TEZ-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14493196#comment-14493196
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Vasanth kumar RJ commented on TEZ-2309:
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Yes. Using slf4j-log4j12 take its dependent version. Like there are log4j
appender implementation in some module but there is no direct log4j dependency
and module uses the log4j dependency of slf4j-log4j12. Then if slf4j-api and
slf4j-log4j12 has different version then there will be two version of
slf4j-api. Finally we can add direct dependency on slf4j-api.
> Fix slf4j dependencies for tez modules
> ---------------------------------------
>
> Key: TEZ-2309
> URL: https://issues.apache.org/jira/browse/TEZ-2309
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Hitesh Shah
> Priority: Critical
> Attachments: TEZ-2309.1.patch
>
>
> Most modules should depend only on slf4j-api and not slf4j-log4j12.
> I believe only tez-dag and tez-runtime-internals might need the log4j
> dependency due to log rotation related code.
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