hi,

thanks for your fast response!

I'm using :

java version "1.6.0_25"
Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
Java HotSpot(TM) Server VM (build 20.0-b11, mixed mode)

This is a 32-bit Oracle JVM (JDK), not the 64-bit on RedHat, but maybe its a bug on REHL.

While I write this, I download the newest oracle version and try it.
Also I just enabled assertions in JVM. I have to wait for occurrence.

martin

Am 12.11.2012 09:56, schrieb Uwe Schindler:
Hi,

I opened the code, the NPE occurs here:

      if (bytes != null) {
        assert bytesRef != null;
        bytesRef.decrementAndGet(); // <-- LINE 102, NPE occurs here
        bytes = null;
        bytesRef = null;
      } else {
        assert bytesRef == null;
      }

This is completely impossible - can you enable assertions in your running JVM to be sure ("-ea:org.apache.lucene..." JVM parameter)? It cannot be a threading issue, because all this code is synchronized.

As you reported another issue with your JVM has segmentation faults, could it be that you have a buggy JVM. Are you using the official Oracle ones, or is this a modified one, e.g. by RedHat? If it is OpenJDK, it is better to use Java 7, as the Java 6 ones may not behave identical to Oracle's official JDKs and may be more buggy.

Can you also post your full JVM version (java -version) and where you got it from?

Uwe

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de


-----Original Message-----
From: Martin Sachs [mailto:martin.sachs@artnology.com]
Sent: Monday, November 12, 2012 9:43 AM
To: java-user@lucene.apache.org
Subject: Re: NPE while decrement ref count

oh yes i missed the version:

I'm using lucene 3.6.1

Martin

Am 12.11.2012 09:40, schrieb Uwe Schindler:
Which Lucene version?

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de


-----Original Message-----
From: Martin Sachs [mailto:martin.sachs@artnology.com]
Sent: Monday, November 12, 2012 9:18 AM
To: java-user@lucene.apache.org
Subject: NPE while decrement ref count

Hi ,

i'm hanging with a NPE Problem. This occurs only on production
environment from day to day.

Do anyone know some thing about this ?

java.lang.NullPointerException
        at

org.apache.lucene.index.SegmentNorms.decRef(SegmentNorms.java:102)
        at

org.apache.lucene.index.SegmentReader.doClose(SegmentReader.java:394)
        at
org.apache.lucene.index.IndexReader.decRef(IndexReader.java:222)
        at
org.apache.lucene.index.DirectoryReader.doClose(DirectoryReader.java:
904
)
        at
org.apache.lucene.index.IndexReader.decRef(IndexReader.java:222)


Martin

--
** Dipl. Inform. Martin Sachs
** Senior Software-Developer / Software-Architect T  +49 (30) 443 50
99 - 33 F  +49 (30) 443 50 99 - 99 E  martin.sachs@artnology.com
 Google+: martin.sachs.artnology@gmail.com
   skype: m____s

** artnology GmbH
A  Milastraße 4 / D-10437 Berlin
T  +49 (30) 443 50 99 - 0
F  +49 (30) 443 50 99 - 99
E  info@artnology.com
I  http://www.artnology.com

Geschäftsführer: Ekkehard Blome (CEO), Felix Kuschnick (CCO)
Registergericht: Amtsgericht Berlin Charlottenburg HRB 76376 UST-Id.
DE
217652550


---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org



--
** Dipl. Inform. Martin Sachs
** Senior Software-Developer / Software-Architect T  +49 (30) 443 50 99 - 33
F  +49 (30) 443 50 99 - 99 E  martin.sachs@artnology.com
 Google+: martin.sachs.artnology@gmail.com
   skype: m____s

** artnology GmbH
A  Milastraße 4 / D-10437 Berlin
T  +49 (30) 443 50 99 - 0
F  +49 (30) 443 50 99 - 99
E  info@artnology.com
I  http://www.artnology.com

Geschäftsführer: Ekkehard Blome (CEO), Felix Kuschnick (CCO)
Registergericht: Amtsgericht Berlin Charlottenburg HRB 76376 UST-Id. DE
217652550



---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org




-- 
** Dipl. Inform. Martin Sachs
** Senior Software-Developer / Software-Architect
T  +49 (30) 443 50 99 - 33
F  +49 (30) 443 50 99 - 99
E  martin.sachs@artnology.com
 Google+: martin.sachs.artnology@gmail.com
   skype: m____s

** artnology GmbH
A  Milastraße 4 / D-10437 Berlin
T  +49 (30) 443 50 99 - 0
F  +49 (30) 443 50 99 - 99
E  info@artnology.com
I  http://www.artnology.com 

Geschäftsführer: Ekkehard Blome (CEO), Felix Kuschnick (CCO)
Registergericht: Amtsgericht Berlin Charlottenburg HRB 76376
UST-Id. DE 217652550