[jira] [Updated] (HADOOP-11680) Deduplicate jars in convenience binary distribution

["Sean Busbey (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-11680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Busbey updated HADOOP-11680:
---------------------------------
    Assignee:     (was: Sean Busbey)

> Deduplicate jars in convenience binary distribution
> ---------------------------------------------------
>
>                 Key: HADOOP-11680
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11680
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: build
>            Reporter: Sean Busbey
>
> Pulled from discussion on HADOOP-11656 Colin wrote:
> {quote}
> bq. Andrew wrote: One additional note related to this, we can spend a lot of time right now distributing 100s of MBs of jar dependencies when launching a YARN job. Maybe this is ameliorated by the new shared distributed cache, but I've heard this come up quite a bit as a complaint. If we could meaningfully slim down our client, it could lead to a nice win.
> I'm frustrated that nobody responded to my earlier suggestion that we de-duplicate jars. This would drastically reduce the size of our install, and without rearchitecting anything.
> In fact I was so frustrated that I decided to write a program to do it myself and measure the delta. Here it is:
> Before:
> {code}
> du -h /h
> 249M    /h
> {code}
> After:
> {code}
> du -h /h
> 140M    /h
> {code}
> Seems like deduplicating jars would be a much better project than splitting into a client jar, if we really cared about this.
> <snip>
> {quote}



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