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From Brandon Williams <dri...@gmail.com>
Subject Re: Mass deletion -- slowing down
Date Mon, 14 Nov 2011 01:34:52 GMT
On Sun, Nov 13, 2011 at 7:25 PM, Maxim Potekhin <potekhin@bnl.gov> wrote:
> Each row represents a computational task (a job) executed on the grid or in
> the cloud. It naturally has a timestamp as one of its attributes,
> representing the time of the last update. This timestamp
> is used to group the data into "buckets" each representing one day in the
> system's activity.
> I create the "DATE" attribute and add it to each row, e.g. it's a column
> {'DATE','20111113'}.

Hmm, so why is pushing this into the row key and then deleting the
entire row not acceptable? (this is what the link I gave would
prescribe)  In other words, you bucket at the row level, instead of
relying on a column attribute that needs an index.

-Brandon

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