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https://issues.apache.org/jira/browse/MAHOUT-708?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen updated MAHOUT-708:
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Description:
I suggest we should move to Hadoop 0.20.203.0 for the next release. (Not 0.21
or further.) It is a much more recent branch of 0.20.x and is compile-time
compatible with 0.20.2 in our code already.
However I know already that switching to it causes some failures, in the
Lanczos jobs for instances. Looks like something's expecting a file somewhere
that isn't where it used to be. I bet it's an easy fix, but don't know what it
is yet.
was:
I suggest we should move to Hadoop 0.21 for the next release. It is the current
release, soon to be superseded by 0.22. It matches more closely what CDH3/4
users use. It has bug fixes, and crucially some features that make joins much
less painful.
The drawback is that EMR does not yet support it. I still suggest we forge
ahead as one imagines it will be supported by the time we release 0.6.
Affects Version/s: (was: 0.6)
Fix Version/s: (was: 1.0)
0.6
Summary: Update to Hadoop 0.20.203.0 (was: Update to Hadoop 0.21)
> Update to Hadoop 0.20.203.0
> ---------------------------
>
> Key: MAHOUT-708
> URL: https://issues.apache.org/jira/browse/MAHOUT-708
> Project: Mahout
> Issue Type: Task
> Components: Classification, Clustering, Collaborative Filtering,
> Frequent Itemset/Association Rule Mining
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Labels: hadoop
> Fix For: 0.6
>
>
> I suggest we should move to Hadoop 0.20.203.0 for the next release. (Not 0.21
> or further.) It is a much more recent branch of 0.20.x and is compile-time
> compatible with 0.20.2 in our code already.
> However I know already that switching to it causes some failures, in the
> Lanczos jobs for instances. Looks like something's expecting a file somewhere
> that isn't where it used to be. I bet it's an easy fix, but don't know what
> it is yet.
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