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https://issues.apache.org/jira/browse/MAPREDUCE-1114?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Douglas updated MAPREDUCE-1114:
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Status: Open (was: Patch Available)
The patch is stale.
The long build times are a problem and ivy's a big part of that, but I agree
with your assessment: this is a hack. I don't think the 15 second payoff
justifies the maintenance cost of a custom caching layer for ivy.
> Speed up ivy resolution in builds with clever caching
> -----------------------------------------------------
>
> Key: MAPREDUCE-1114
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1114
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: build
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Minor
> Attachments: mapreduce-1114.txt, mapreduce-1114.txt,
> mapreduce-1114.txt
>
>
> An awful lot of time is spent in the ivy:resolve parts of the build, even
> when all of the dependencies have been fetched and cached. Profiling showed
> this was in XML parsing. I have a sort-of-ugly hack which speeds up
> incremental compiles (and more importantly "ant test") significantly using
> some ant macros to cache the resolved classpaths.
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