Is there a maximum size for a reader?

Lucene 4.2.1 I am moving my application from 3.6 to 4.2.1. At the moment I have a reader for each of my shards (100 shards each about 5 million records). I am considering using a MultiReader for all the shards. The application gets about 2 million new records a week. Right now I don't have a f

problem with reading an index

feature/bug in lucene that is causing this discrepancy? Thanks so much Liz Sommers lizswo...@gmail.com