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From "Bryan A. Pendleton" ...@geekdom.net>
Subject Re: [jira] Resolved: (HADOOP-51) per-file replication counts
Date Mon, 10 Apr 2006 20:48:55 GMT
I agree: Good work Konstantin!

I'll file new feature requests for the sticky bits from the discussion.

On 4/10/06, Doug Cutting (JIRA) <jira@apache.org> wrote:
>
>      [ http://issues.apache.org/jira/browse/HADOOP-51?page=all ]
>
> Doug Cutting resolved HADOOP-51:
> --------------------------------
>
>     Resolution: Fixed
>
> I just committed this.  I fixed the comment on dfs.replication.min.  I
> also added a message to CHANGES.txt.
>
> Thanks, Konstantin!
>
> Bryan: I think the issues you raise bear further discussion that I do not
> wish to stifle.  For example, we may someday want  to be able to specify
> more than 2^16 replications, and we may wish to handle replication requests
> outside of the configured limits differently.  But, for now, I think the
> patch fixes this bug and that those issues can be addressed though
> subsequent bugs as we gain experience.  So please file new bugs for any
> related issues that are important to you.
>
> > per-file replication counts
> > ---------------------------
> >
> >          Key: HADOOP-51
> >          URL: http://issues.apache.org/jira/browse/HADOOP-51
> >      Project: Hadoop
> >         Type: New Feature
>
> >   Components: dfs
> >     Versions: 0.2
> >     Reporter: Doug Cutting
> >     Assignee: Konstantin Shvachko
> >      Fix For: 0.2
> >  Attachments: Replication.patch
> >
> > It should be possible to specify different replication counts for
> different files.  Perhaps an option when creating a new file should be the
> desired replication count.  MapReduce should take advantage of this feature
> so that job.xml and job.jar files, which are frequently accessed by lots
> of machines, are more highly replicated than large data files.
>
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>


--
Bryan A. Pendleton
Ph: (877) geek-1-bp
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