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From Mike Austin <mike.aus...@juggle.com>
Subject Solr commit process and read downtime
Date Wed, 31 Aug 2011 18:16:16 GMT
I've set up a master slave configuration and it's working great!  I know
this is the better setup but if I had just one index due to requirements,
I'd like to know more about the performance hit of the commit. let's just
assume I have a decent size index of a few gig normal sized documents with
high traffic.  A few questions:

- (main question) When you do a commit on a single index, is there anytime
when the reads will not have an index to search on?
- With the rebuilding of caches and whatever else happens, is the only
downside the fact that the server performance will be degraded due to file
copy, cache warming, etc.. or will the index be actually locked at some
point?
- On a commit, do the files get copied so you need double the space or is
that just the optimize?

I know a master/slave setup is used to reduce these issues, but if I had
only one server I need to know the potential risks.

Thanks,
Mike

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