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Problem with mongo 2.2.0 and java connection
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Sebastian Gutierrez  
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 More options Oct 8 2012, 10:25 am
From: Sebastian Gutierrez <scg...@gmail.com>
Date: Mon, 8 Oct 2012 12:12:13 -0200
Local: Mon, Oct 8 2012 10:12 am
Subject: Problem with mongo 2.2.0 and java connection
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Hi,

I´m starting to use mongo for a new project, and using the last 2.2.0 and the last 2.9.1 java driver

I´m getting this:

Exception in thread "ReplicaSetStatus:Updater" java.lang.OutOfMemoryError: Java heap space
        at org.bson.io.PoolOutputBuffer.<init>(PoolOutputBuffer.java:223)
        at com.mongodb.Mongo$1.createNew(Mongo.java:624)
        at com.mongodb.Mongo$1.createNew(Mongo.java:621)
        at org.bson.util.SimplePool.get(SimplePool.java:44)
        at com.mongodb.OutMessage.<init>(OutMessage.java:132)
        at com.mongodb.OutMessage.<init>(OutMessage.java:124)
        at com.mongodb.OutMessage.query(OutMessage.java:83)
        at com.mongodb.OutMessage.query(OutMessage.java:79)
        at com.mongodb.OutMessage.query(OutMessage.java:75)
        at com.mongodb.DBPort.findOne(DBPort.java:142)
        at com.mongodb.DBPort.runCommand(DBPort.java:148)
        at com.mongodb.ConnectionStatus$UpdatableNode.update(ConnectionStatus.java:184 )
        at com.mongodb.ReplicaSetStatus$UpdatableReplicaSetNode.update(ReplicaSetStatu s.java:614)
        at com.mongodb.ReplicaSetStatus$Updater.updateAll(ReplicaSetStatus.java:766)
        at com.mongodb.ReplicaSetStatus$Updater.run(ReplicaSetStatus.java:736)
Exception in thread "ReplicaSetStatus:Updater" Exception in thread "ReplicaSetStatus:Updater" Exception in thread "ReplicaSetStatus:Updater" Exception in thread "ReplicaSetStatus:Updater" Exception in thread "ReplicaSetStatus:Updater" Exception in thread "ReplicaSetStatus:Updater" Exception in thread "ReplicaSetStatus:Updater" Exception

there is no query at all just connected.

I´m connected like this:

   static private  Mongo M;
     static private DB MDB;

     M = new Mongo(hosts);
            M.setWriteConcern(WriteConcern.SAFE);
            MDB= M.getDB( DataBase);

best regard.


 
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Gianfranco  
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 More options Oct 8 2012, 11:01 am
From: Gianfranco <gianfra...@10gen.com>
Date: Mon, 8 Oct 2012 08:01:39 -0700 (PDT)
Local: Mon, Oct 8 2012 11:01 am
Subject: Re: Problem with mongo 2.2.0 and java connection
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In what platform are you compiling this? Windows, Mac, Linux, etc?

See this page for more info on this JVM heap issue:
http://stackoverflow.com/questions/37335/how-to-deal-with-java-lang-o...

It's not a mongodb driver or database issue.


 
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Sebastian Gutierrez  
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 More options Oct 8 2012, 11:43 am
From: Sebastian Gutierrez <scg...@gmail.com>
Date: Mon, 8 Oct 2012 13:43:05 -0200
Local: Mon, Oct 8 2012 11:43 am
Subject: Re: [mongodb-user] Problem with mongo 2.2.0 and java connection
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compiling on mac, running on linux

java version "1.7.0_07"
Java(TM) SE Runtime Environment (build 1.7.0_07-b10)
Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)

same arquitecture I have with mysql, remember this is doing nothing. is just when starts, until my server goes down…..

ReplicaSetStatus is not from my code..

any idea?

thanks!

On Oct 8, 2012, at 1:01 PM, Gianfranco <gianfra...@10gen.com> wrote:


 
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Octavian Covalschi  
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 More options Oct 8 2012, 1:29 pm
From: Octavian Covalschi <octavian.covals...@gmail.com>
Date: Mon, 8 Oct 2012 12:29:22 -0500
Local: Mon, Oct 8 2012 1:29 pm
Subject: Re: [mongodb-user] Problem with mongo 2.2.0 and java connection
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Is this a web app? Are you passing any jvm args at all? Also, is this code
executed only once? If yes, when?

On Mon, Oct 8, 2012 at 10:43 AM, Sebastian Gutierrez <scg...@gmail.com>wrote:


 
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Sebastian Gutierrez  
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 More options Oct 9 2012, 7:38 am
From: Sebastian Gutierrez <scg...@gmail.com>
Date: Tue, 9 Oct 2012 09:38:06 -0200
Local: Tues, Oct 9 2012 7:38 am
Subject: Re: [mongodb-user] Problem with mongo 2.2.0 and java connection
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yes is a war file

is executed one, and is on a singleton class, in the startup of the application.

ejecution:

 java -jar WorkforceServer.jar JAVA_OPTS=-server -Xms128M -Xmx512M -Duser.language=es -Djava.awt.headless=true -XX:PermSize=64m -XX:MaxPermSize=128m -d64 &

this is a jetty server that deploys the war file, as I said, is doing nothing just starting, same arquitecture I have with mysql with no problems.

thanks

On Oct 8, 2012, at 3:29 PM, Octavian Covalschi <octavian.covals...@gmail.com> wrote:


 
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Discussion subject changed to "Fwd: [mongodb-user] Problem with mongo 2.2.0 and java connection" by Sebastian Gutierrez
Sebastian Gutierrez  
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 More options Oct 10 2012, 8:56 am
From: Sebastian Gutierrez <scg...@gmail.com>
Date: Wed, 10 Oct 2012 10:55:50 -0200
Local: Wed, Oct 10 2012 8:55 am
Subject: Fwd: [mongodb-user] Problem with mongo 2.2.0 and java connection
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any idea???

I´m totally lost with this.

thanks

Begin forwarded message:


 
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Discussion subject changed to "Problem with mongo 2.2.0 and java connection" by Octavian Covalschi
Octavian Covalschi  
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 More options Oct 10 2012, 9:06 am
From: Octavian Covalschi <octavian.covals...@gmail.com>
Date: Wed, 10 Oct 2012 08:06:06 -0500
Local: Wed, Oct 10 2012 9:06 am
Subject: Re: [mongodb-user] Problem with mongo 2.2.0 and java connection
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What framework are you using to create your web app? Can you check the
actual memory usage with visualvm tool?

Also, can you create a simple console app with the same code used and
connect to mongodb? Maybe this will narrow it down...

On Wed, Oct 10, 2012 at 7:55 AM, Sebastian Gutierrez <scg...@gmail.com>wrote:


 
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Octavian Covalschi  
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 More options Oct 10 2012, 10:00 am
From: Octavian Covalschi <octavian.covals...@gmail.com>
Date: Wed, 10 Oct 2012 09:00:02 -0500
Local: Wed, Oct 10 2012 10:00 am
Subject: Re: [mongodb-user] Problem with mongo 2.2.0 and java connection
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Also, can you try an older version of java diver? 2.8.x or even 2.7.x ?
That will help to exclude the driver..

On Wed, Oct 10, 2012 at 8:06 AM, Octavian Covalschi <


 
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Sebastian Gutierrez  
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 More options Oct 10 2012, 10:55 am
From: Sebastian Gutierrez <scg...@gmail.com>
Date: Wed, 10 Oct 2012 12:55:24 -0200
Local: Wed, Oct 10 2012 10:55 am
Subject: Re: [mongodb-user] Problem with mongo 2.2.0 and java connection
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the components are:

JAX and Jersey for RESTFull webservice, as I said, everything is the same as I have on other apps that serves many connections with mysql with no problem.

is there anyway to give more log?? or give someone access to check? Im evaluating NoSQL databases for a big project, and Mongo seems like the one I would like to use, but I feel like I can´t even start with
it, I also tested driver 2.8.1 with the same result.

maybe some mongo configuration??? I haven´t touch any config since install

I will try to make a console application as soon as I can.

thanks

On Oct 10, 2012, at 11:06 AM, Octavian Covalschi <octavian.covals...@gmail.com> wrote:


 
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Jeff Yemin  
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 More options Oct 10 2012, 12:26 pm
From: Jeff Yemin <jeff.ye...@10gen.com>
Date: Wed, 10 Oct 2012 09:26:57 -0700 (PDT)
Local: Wed, Oct 10 2012 12:26 pm
Subject: Re: [mongodb-user] Problem with mongo 2.2.0 and java connection
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Try using jmap -histo to get some more information about what types of
objects are responsible for the memory consumption.

Regards,
Jeff


 
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Robert Stewart  
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 More options Oct 12 2012, 12:15 am
From: Robert Stewart <atacam...@gmail.com>
Date: Thu, 11 Oct 2012 21:15:36 -0700 (PDT)
Local: Fri, Oct 12 2012 12:15 am
Subject: Re: Problem with mongo 2.2.0 and java connection
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I agree with the recommendations to try VisualVM (or even jconsole) or
jmap. VisualVM will be very helpful for monitoring heap growth before and
after you connect to MongoDB, as well as for checking which classes'
objects are occupying most of the heap.

You might also want to try the following JVM args:

-verbose:gc -Xloggc:gc.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps
-XX:+PrintGCApplicationStoppedTime -XX:+PrintHeapAtGC

This will write a log file with a lot of useful info on heap usage and
garbage collection. You can then tail it while connecting. Make sure the
argument to -Xloggc includes a relative or absolute path to a directory
your webapp can write to, such as your webapp's existing log directory.

I've used the above JVM args to track down several memory-related problems.
The overhead is pretty small, so I use those settings in production with an
app that has a 55 GB heap.

Robert


 
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