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From Thomas Bernhardt <>
Subject Re: index_interval
Date Mon, 17 Jun 2013 19:59:39 GMT

 From: Robert Coli <>
Sent: Monday, June 17, 2013 3:28 PM
Subject: Re: index_interval

On Mon, May 13, 2013 at 9:19 PM, Bryan Talbot <> wrote:
> Can the index sample storage be treated more like key cache or row cache
> where the total space used can be limited to something less than all
> available system ram, and space is recycled using an LRU (or configurable)
> algorithm?

Treating it with LRU doesn't seem to make that much sense, but there's
seemingly-trivial ways to prune an Index Sample [1] like

Brief conversation with driftx suggests a lack of enthusiasm for the
scale of win potential from active pruning of the Index Sample,
especially given the relative size of bloom filters compared to the
Index Sample.

However if you are interested in this as a potential improvement, feel
free to file a JIRA! :D


[1] New terminology "Partition Summary" per jbellis keynote @ summit2013
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