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Accumulo, mail # user - Running Accumulo straight from Memory


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Moore, Matthew J. 2012-09-11, 16:02
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Adam Fuchs 2012-09-11, 21:29
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Moore, Matthew J. 2012-09-12, 16:32
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dlmarion@... 2012-09-12, 16:56
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David Medinets 2012-09-12, 16:57
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Adam Fuchs 2012-09-12, 20:53
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David Medinets 2012-09-12, 21:20
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Re: Running Accumulo straight from Memory
Adam Fuchs 2012-09-12, 21:27
Yes, the effect of locality groups would be about the same in an in memory
system. The only exception would be if you're not using locality groups and
are fetching a particular column, the automatic seeking behavior of the
column filtering iterator would be more efficient with in memory rfiles.

Adam
On Sep 12, 2012 5:20 PM, "David Medinets" <[EMAIL PROTECTED]> wrote:

> Why would locality groups be useful in an in-memory system?
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> On Wed, Sep 12, 2012 at 4:53 PM, Adam Fuchs <[EMAIL PROTECTED]> wrote:
> > Even if you are just using memory, minor and major compactions are
> important
> > to get compression, handle deletes, get sequential access (cache line
> > efficiency), use iterators, and introduce locality groups.
>
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Moore, Matthew J. 2012-09-13, 12:47
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Keith Turner 2012-09-13, 16:32
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Eric Newton 2012-09-11, 16:19
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Moore, Matthew J. 2012-09-11, 16:55
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Eric Newton 2012-09-11, 17:59
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William Slacum 2012-09-11, 16:30
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William Slacum 2012-09-11, 16:30