On 6/3/2014 12:54 PM, Jack Krupansky wrote: > How much free system memory do you have for the OS to cache file > system data? If your entire index fits in system memory operations > will be fast, but as your index grows beyond the space the OS can use > to cache the data, performance will decline. > > But there's no hard limit in Solr per se.
Vineet, There is only one hard limit in Solr: You can't put more than about 2 billion documents in one shard. The exact number is 2147483647 -- the largest number that you can store in a Java integer. Because this number also includes deleted documents, to be absolutely sure that nothing will have a problem, it would be advisable to stay below 1 billion documents per shard. Because of Solr's reliance on RAM for the OS disk cache, which Jack has already mentioned, chances are very good that your shards will have performance problems long before you reach a billion documents. Thanks, Shawn
