[jira] [Commented] (HADOOP-12146) dockermode should support custom maven repos

["Allen Wittenauer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-12146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14606632#comment-14606632 ] 

Allen Wittenauer commented on HADOOP-12146:
-------------------------------------------

IMO, per-run is going to be expensive and slow. Per-project doesn't protect projects against themselves.  I think per-project, per-branch is probably the correct mix. Also, I think this mode should run in effectively three ways:

* no override
* custom directory specified by the user
* some default directory path structure (e.g., ${HOME}/test-patch-maven/${project}/${branch}

In the case of the latter, we'll need to build some self-cleaning code similar to the things we're doing for docker in general.

> dockermode should support custom maven repos
> --------------------------------------------
>
>                 Key: HADOOP-12146
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12146
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: yetus
>    Affects Versions: HADOOP-12111
>            Reporter: Allen Wittenauer
>
> On busy jenkins servers, it only takes one bad apple doing a dependency:purge-local-repository to wreak havoc on other projects. In order to protect against this, test-patch should have some way to overlay the .m2 directory with something that is (minimally) per-project and maximally per run.



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