[jira] [Created] (LUCENE-5843) IndexWriter should refuse to create an index with more than INT_MAX docs

["Michael McCandless (JIRA)" <ji...@apache.org>]

Michael McCandless created LUCENE-5843:
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             Summary: IndexWriter should refuse to create an index with more than INT_MAX docs
                 Key: LUCENE-5843
                 URL: https://issues.apache.org/jira/browse/LUCENE-5843
             Project: Lucene - Core
          Issue Type: Bug
          Components: core/index
            Reporter: Michael McCandless
            Assignee: Michael McCandless
             Fix For: 5.0, 4.10


It's more and more common for users these days to create very large indices, e.g.  indexing lines from log files, or packets on a network, etc., and it's not hard to accidentally exceed the maximum number of documents in one index.

I think the limit is actually Integer.MAX_VALUE-1 docs, because we use that value as a sentinel during searching.

I'm not sure what IW does today if you create a too-big index but it's probably horrible; it may succeed and then at search time you hit nasty exceptions when we overflow int.

I think it should throw an IndexFullException instead.  It'd be nice if we could do this on the very doc that when added would go over the limit, but I would also settle for just throwing at flush as well ... i.e. I think what's really important is that the index does not become unusable.




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