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Posted to java-user@lucene.apache.org by Martin Sachs <ma...@artnology.com> on 2012/11/12 09:18:25 UTC
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
Re: NPE while decrement ref count
Posted by Martin Sachs <ma...@artnology.com>.
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
RE: NPE while decrement ref count
Posted by Uwe Schindler <uw...@thetaphi.de>.
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
Re: NPE while decrement ref count
Posted by Martin Sachs <ma...@artnology.com>.
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
RE: NPE while decrement ref count
Posted by Uwe Schindler <uw...@thetaphi.de>.
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
>
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