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Posted to dev@lucene.apache.org by "Hoss Man (JIRA)" <ji...@apache.org> on 2014/07/23 19:11:38 UTC
[jira] [Commented] (LUCENE-5843) IndexWriter should refuse to
create an index with more than INT_MAX docs
[ https://issues.apache.org/jira/browse/LUCENE-5843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14071978#comment-14071978 ]
Hoss Man commented on LUCENE-5843:
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bq. 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.
that is exactly what happens -- see SOLR-6065 for context
> 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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