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From Bram Van Dam <>
Subject Schedule merges during off-peak hours?
Date Sun, 01 May 2016 18:04:05 GMT
Hey folks,

Disclaimer: I haven't given this too much thought, so feel free to shoot
me down if this is a stupid idea.

We have a lot of Solr instances with a lot of different customers, and
most of them fit into a patterb of 9-5 searching and slow but steady
addition of documents 24/7, at a rate of about 10docs/second.

This means there's hardly any searching going on at night. This also
means that merges during the day can be a problem when indexes grow
large, especially with commit intervals of around one minute. This seems
wasteful, because the index doesn't grow *that* much larger during a
single working day.

I was wondering if it would be a good idea to create a MergePolicy that
only merges segments during off-peak hours (or maybe according to a
cron-style pattern or something).

Any thoughts?


 - Bram

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