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https://issues.apache.org/jira/browse/LUCENE-2280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12840660#action_12840660
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Ritesh Nigam commented on LUCENE-2280:
--------------------------------------

Sorry for the delayed response but i was trying to collect some data, I still 
have to wait for the log created by lucene APIs after turning on infostream, i 
will post that log file as soon as i get it. To answer your questions, i am 
running on Windows 2003 server with IBM JRE 1.6 and I am trying to index a 
database that is about 45 GB in size. On Unix, i am not facing this issue.

With the lucene logging on, i waited for about 2 days for the NPE to reoccur, 
but it did not happen. I was tyring with the stock jar file of lucene 2.3.2. 
However, indexing failed again and the index file was again deleted. Looking 
into the logs this time, I found the following exceptions:

16:06:48 03/01/2010: Fatal error while indexing CRs.
Stack trace: java.io.FileNotFoundException: index\_21f.fdt (The system cannot 
find the file specified.)
        at java.io.RandomAccessFile.open(Native Method)
        at java.io.RandomAccessFile.<init>(RandomAccessFile.java:218)
        at 
org.apache.lucene.store.FSDirectory$FSIndexInput$Descriptor.<init>(FSDirectory.java:506)
        at 
org.apache.lucene.store.FSDirectory$FSIndexInput.<init>(FSDirectory.java:536)
        at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:445)
        at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:440)
        at 
org.apache.lucene.index.CompoundFileWriter.copyFile(CompoundFileWriter.java:206)
        at 
org.apache.lucene.index.CompoundFileWriter.close(CompoundFileWriter.java:173)
        at 
org.apache.lucene.index.DocumentsWriter.createCompoundFile(DocumentsWriter.java:576)
        at org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:2708)
        at org.apache.lucene.index.IndexWriter.flush(IndexWriter.java:2539)
        at 
org.apache.lucene.index.IndexWriter.closeInternal(IndexWriter.java:1222)
        at org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1196)
        at org.apache.lucene.index.IndexWriter.close(IndexWriter.java:1164)

I am not sure if deletion of the index file when these exceptions are thrown, 
is the right behaviour. 

I am re-running my test to try and reproduce the NPE issue which i had reported 
earlier and i intend to pass on the logs to you as soon as i have it. However, 
are you aware of any issue that a combination of IBM JRE + Windows 2003 server 
would have with lucene?

As far as the code is concern I am closing the indexwriter in finally block, 
when is thrown I am logging it in catch block and then finally closing the 
indexwriter.

                

> IndexWriter.optimize() throws NullPointerException
> --------------------------------------------------
>
>                 Key: LUCENE-2280
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2280
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.3.2
>         Environment: Win 2003, lucene version 2.3.2, IBM JRE 1.6
>            Reporter: Ritesh Nigam
>         Attachments: lucene.jar
>
>
> I am using lucene 2.3.2 search APIs for my application, i am indexing 45GB 
> database which creates approax 200MB index file, after finishing the indexing 
> and while running optimize() i can see NullPointerExcception thrown in my log 
> and index file is getting corrupted, log says
> ------------------------------------------------------------------------
> Caused by: 
> java.lang.NullPointerException
>       at 
> org.apache.lucene.store.BufferedIndexOutput.writeBytes(BufferedIndexOutput.java:49)
>       at org.apache.lucene.store.IndexOutput.writeBytes(IndexOutput.java:40)
>       at 
> org.apache.lucene.index.SegmentMerger.mergeNorms(SegmentMerger.java:566)
>       at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:135)
>       at 
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3273)
>       at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:2968)
>       at 
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:240)
> ------------------------------------------------------------------------
> and this is happening quite frequently, although I am not able to reproduce 
> it on demand, I saw an issue logged which is some what related to mine issue 
> (http://mail-archives.apache.org/mod_mbox/lucene-solr-user/200809.mbox/%3c6e4a40db-5efc-42da-a857-d59f4ec34...@mikemccandless.com%3e)
>  but the only difference here is I am not using Store.Compress for my fields, 
> i am using Store.NO instead. please note that I am using IBM JRE for my 
> application.
> Is this an issue with lucene?, if yes it is fixed in which version?

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