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From jm <jmugur...@gmail.com>
Subject Re: NPE in RAMDirectory after upgrade to 2.1
Date Mon, 26 Feb 2007 18:55:15 GMT
Mike,

You were right. As I have many indexes I keep a cache of the
IndexWriters, and in some specific case (that cannot happen in my dev
env) I was closing them without removing them from the cache. Somehow
it was working before 2.1, and upgrading made the error clear.

thanks
javi

On 2/26/07, Michael McCandless <lucene@mikemccandless.com> wrote:
>
> "jm" <jmuguruza@gmail.com> wrote:
>
> > I have two processes running in parallel, each one adding and deleting
> > to its own set of indexes. Since I upgraded to 2.1 I am getting a NPE
> > at RAMDirectory.java line 207 in one of the processes.
> >
> > Line 207 is:
> >       RAMFile existing = (RAMFile)fileMap.get(name);
> > the stack trace is:
> > java.lang.NullPointerException
> > org.apache.lucene.store.RAMDirectory.createOutput(RAMDirectory.java:207)
> > org.apache.lucene.index.FieldInfos.write(FieldInfos.java:256)
> > org.apache.lucene.index.DocumentWriter.addDocument(DocumentWriter.java:75)
> > org.apache.lucene.index.IndexWriter.buildSingleDocSegment(IndexWriter.java:706)
> > org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:694)
> > org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:680)
>
> Hmm.  One thing that changed in 2.1 is when a RAMDirectory is closed
> it now sets fileMap to null (which it did not pre-2.1).
>
> Is it possible you are accidentally closing a writer but then calling
> its addDocument method?
>
> Mike
>
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