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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2008/01/20 19:38:35 UTC

[jira] Resolved: (LUCENE-1144) NPE crash in case of out of memory

     [ https://issues.apache.org/jira/browse/LUCENE-1144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless resolved LUCENE-1144.
----------------------------------------

    Resolution: Fixed

Fixed on trunk & 2.3.

> NPE crash in case of out of memory
> ----------------------------------
>
>                 Key: LUCENE-1144
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1144
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.3
>            Reporter: Daniel Naber
>         Attachments: LUCENE-1144.patch, LuceneCrash.java
>
>
> The attached class makes Lucene crash with an NPE when starting it with -Xmx10M, although there's probably an OutOfMemory problem. The stacktrace:
> Exception in thread "main" java.lang.NullPointerException
> 	at java.util.Arrays.fill(Unknown Source)
> 	at org.apache.lucene.index.DocumentsWriter$ByteBlockPool.reset(DocumentsWriter.java:2873)
> 	at org.apache.lucene.index.DocumentsWriter$ThreadState.resetPostings(DocumentsWriter.java:637)
> 	at org.apache.lucene.index.DocumentsWriter.resetPostingsData(DocumentsWriter.java:458)
> 	at org.apache.lucene.index.DocumentsWriter.abort(DocumentsWriter.java:423)
> 	at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:2433)
> 	at org.apache.lucene.index.DocumentsWriter.addDocument(DocumentsWriter.java:2397)
> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1445)
> 	at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:1424)
> 	at LuceneCrash.myrun(LuceneCrash.java:32)
> 	at LuceneCrash.main(LuceneCrash.java:19)
> The documents are quite big (some hundred KB each), I cannot attach them but I can send them via private mail if needed. The crash happens the first time reset() is called, after indexing 10 documents. I assume the bug is just that the error is misleading, there maybe should be an OOM error.

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