[jira] [Updated] (MAHOUT-951) StackOverflow Error when using mahout lucene.vector

["Paul Rudin (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul Rudin updated MAHOUT-951:
------------------------------

    Status: Patch Available  (was: Open)

change recursion to a loop
                
> StackOverflow Error when using mahout lucene.vector
> ---------------------------------------------------
>
>                 Key: MAHOUT-951
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-951
>             Project: Mahout
>          Issue Type: Bug
>          Components: Integration
>    Affects Versions: 0.6
>         Environment: presumably would occur on any platform given the same data.
>            Reporter: Paul Rudin
>              Labels: patch
>
> Running mahout lucene.vector can result in a java StackOverFlowError.
> I think this is probably because the current implementation of LuceneIterator.computeNext() is recursive and with appropriate data the stack becomes too large. The recursion only occurs when you hit a document that doesn't have termvectors in the specified field - so you need a lucene.index with lots of documents lacking such in order to hit this problem.
> I've made minimal changes to convert to a loop rather than recurse and I'll attach a patch to this ticket.

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