On Wed, Apr 3, 2013 at 7:55 PM, Shawn Heisey <s...@elyograg.org> wrote: > In situations where I don't want to change the default value, I prefer > to leave config elements out of the solrconfig. It makes the config > smaller, and it also makes it so that I will automatically see benefits > from the default changing in new versions. >
Thanks. This makes sense. I take it, then, that you update (or at least review) solrconfig for each new Solr version. As I become more familiar with that file I will begin doing the same. > In the case of maxWarmingSearchers, I would hope that you have your > system set up so that you would never need more than 1 warming searcher > at a time. If you do a commit while a previous commit is still warming, > Solr will try to create a second warming searcher. > How would I set the system up for that? We have very many commits (every few seconds) and each commit contains a few tens of documents (mostly smaller than 1 KiB per document). Right now we get about 200-300 searches per minute. Note that I expect both the commit rate and the search rate to increase 2-3 times in the next month, and ideally I should be able to scale it beyond that. I'm right now looking into sharding as a possible solution. > I went poking in the code, and it seems that maxWarmingSearchers > defaults to Integer.MAX_VALUE. I'm not sure whether this is a bad > default or not. It does mean that a pathological setup without > maxWarmingSearchers in the config will probably blow up with an > OutOfMemory exception, but is that better or worse than commits that > don't make new documents searchable? I can see arguments either way. > This is interesting, what you found is that the value in the stock solrconfig.xml file differs from the Solr default value. I think that this is bad practice: a single default should be decided upon and Solr should use this value when nothing is specified in solrconfig.xml, and that _same_value_ should be specified in the stock solrconfig.xml. Is it not a reasonable assumption that this would be the case? -- Dotan Cohen http://gibberish.co.il http://what-is-what.com
