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https://issues.apache.org/jira/browse/HADOOP-18006?focusedWorklogId=681104&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-681104
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ASF GitHub Bot logged work on HADOOP-18006:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 13/Nov/21 13:40
            Start Date: 13/Nov/21 13:40
    Worklog Time Spent: 10m 
      Work Description: amahussein commented on pull request #3648:
URL: https://github.com/apache/hadoop/pull/3648#issuecomment-968070449


   Thanks @virajjasani for reporting this.
   +1 LGTM


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 681104)
    Time Spent: 50m  (was: 40m)

> maven-enforcer-plugin's execution of banned-illegal-imports gets overridden 
> in child poms
> -----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-18006
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18006
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Viraj Jasani
>            Assignee: Viraj Jasani
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> When we specify any maven plugin with execution tag in the parent as well as 
> child modules, child module plugin overrides parent plugin. For instance, 
> when {{banned-illegal-imports}} is applied for any child module with only one 
> banned import (let’s say {{{}Preconditions{}}}), then only that banned import 
> is covered by that child module and all imports defined in parent module (e.g 
> Sets, Lists etc) are overridden and they are no longer applied.
> After this 
> [commit|https://github.com/apache/hadoop/commit/62c86eaa0e539a4307ca794e0fcd502a77ebceb8],
>  hadoop-hdfs module will not complain about {{Sets}} even if i import it from 
> guava banned imports but on the other hand, hadoop-yarn module doesn’t have 
> any child level {{banned-illegal-imports}} defined so yarn modules will fail 
> if {{Sets}} guava import is used.
> So going forward, it would be good to replace guava imports with Hadoop’s own 
> imports module-by-module and only at the end, we should add new entry to 
> parent pom {{banned-illegal-imports}} list.



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