[appengine-java] Re: issues with compass for GAE apps
hie
any updates on this please?
yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders. So, how
should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 9:01 PM, Vik vik@gmail.com wrote:
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the static
block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular servlet
depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping the
PMF class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized error for
PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.com wrote:
Thanks for the code. I have three suggestions (mostly from my previous
post):
1) Are you maybe loading that singleton class in different classloaders?
Try logging the classloader object reference that tries to create the
PersistenceManagerFactory. You can add a static initializer ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for duplicate
PMF creations to log a stacktrace first thing every time it's called. Then
you'll know for sure which code paths are causing this to happen.
3) Disable the check if you're sure you're only creating the PMF a small
number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
private static final Compass compass;
private static final CompassGps compassGps;
static {
compass = new CompassConfiguration().setConnection(gae://index)
.setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE,
disabled)
.addScan(vik.sakshum.sakshumweb.jsp.model.jdo)
.buildCompass();
compassGps = new SingleCompassGps(compass);
compassGps.addGpsDevice(new Jdo2GpsDevice(appenine,
pmfInstance));
compassGps.start();
compassGps.index();
}
private PMF() {}
public static PersistenceManagerFactory get() {
return pmfInstance;
}
public static Compass getCompass(){
return compass;
}
}
any clues?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 12:34 AM, Toby Reyelts to...@google.com wrote:
Vik,
Do you have some sample code to reproduce this? By default, we throw an
exception if you try to create more than one PersistenceManagerFactory. Are
you using a singleton class to prevent more than one from being created? If
so, are you maybe loading that singleton class in different classloaders?
(Try logging the classloader object reference that tries to create the
PersistenceManagerFactory).
Lastly, you can disable the exception if you want (details should be in
the exception message), but it will be a performance problem for you if
you're creating more than a few PersistenceManagerFactory's.
On Tue, Sep 1, 2009 at 1:51 PM, Vik vik@gmail.com wrote:
anyone any updates on this please?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Sun, Aug 30, 2009 at 8:51 PM, Vik vik@gmail.com wrote:
Hie
Any one using compass on his GAE app?
I am frequently getting error cannot initialize PMF where there is
static code to initialize compass apis.
Any idea how to resolve?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
[appengine-java] Re: issues with compass for GAE apps
To be clear, you're getting these two log statements in the same request?
Or subsequent requests?
On Thu, Sep 17, 2009 at 1:48 AM, Vik vik@gmail.com wrote:
hie
any updates on this please?
yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders. So,
how should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 9:01 PM, Vik vik@gmail.com wrote:
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the
static block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular servlet
depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping the
PMF class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized error for
PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.com wrote:
Thanks for the code. I have three suggestions (mostly from my previous
post):
1) Are you maybe loading that singleton class in different
classloaders? Try logging the classloader object reference that tries to
create the PersistenceManagerFactory. You can add a static initializer ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for duplicate
PMF creations to log a stacktrace first thing every time it's called. Then
you'll know for sure which code paths are causing this to happen.
3) Disable the check if you're sure you're only creating the PMF a small
number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
private static final Compass compass;
private static final CompassGps compassGps;
static {
compass = new CompassConfiguration().setConnection(gae://index)
.setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE,
disabled)
.addScan(vik.sakshum.sakshumweb.jsp.model.jdo)
.buildCompass();
compassGps = new SingleCompassGps(compass);
compassGps.addGpsDevice(new Jdo2GpsDevice(appenine,
pmfInstance));
compassGps.start();
compassGps.index();
}
private PMF() {}
public static PersistenceManagerFactory get() {
return pmfInstance;
}
public static Compass getCompass(){
return compass;
}
}
any clues?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 12:34 AM, Toby Reyelts to...@google.com wrote:
Vik,
Do you have some sample code to reproduce this? By default, we throw an
exception if you try to create more than one PersistenceManagerFactory.
Are
you using a singleton class to prevent more than one from being created?
If
so, are you maybe loading that singleton class in different classloaders?
(Try logging the classloader object reference that tries to create the
PersistenceManagerFactory).
Lastly, you can disable the exception if you want (details should be in
the exception message), but it will be a performance problem for you if
you're creating more than a few PersistenceManagerFactory's.
On Tue, Sep 1, 2009 at 1:51 PM, Vik vik@gmail.com wrote:
anyone any updates on this please?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Sun, Aug 30, 2009 at 8:51 PM, Vik vik@gmail.com wrote:
Hie
Any one using compass on his GAE app?
I am frequently getting error cannot initialize PMF where there is
static code to initialize compass apis.
Any idea how to resolve?
Thankx and Regards
Vik
Founder
[appengine-java] Re: issues with compass for GAE apps
hie
in two different requests.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 8:16 PM, Don Schwarz schwa...@google.com wrote:
To be clear, you're getting these two log statements in the same request?
Or subsequent requests?
On Thu, Sep 17, 2009 at 1:48 AM, Vik vik@gmail.com wrote:
hie
any updates on this please?
yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders. So,
how should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 9:01 PM, Vik vik@gmail.com wrote:
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the
static block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular servlet
depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping the
PMF class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized error
for PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.com wrote:
Thanks for the code. I have three suggestions (mostly from my previous
post):
1) Are you maybe loading that singleton class in different
classloaders? Try logging the classloader object reference that tries to
create the PersistenceManagerFactory. You can add a static initializer
ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for duplicate
PMF creations to log a stacktrace first thing every time it's called. Then
you'll know for sure which code paths are causing this to happen.
3) Disable the check if you're sure you're only creating the PMF a small
number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
private static final Compass compass;
private static final CompassGps compassGps;
static {
compass = new CompassConfiguration().setConnection(gae://index)
.setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE,
disabled)
.addScan(vik.sakshum.sakshumweb.jsp.model.jdo)
.buildCompass();
compassGps = new SingleCompassGps(compass);
compassGps.addGpsDevice(new Jdo2GpsDevice(appenine,
pmfInstance));
compassGps.start();
compassGps.index();
}
private PMF() {}
public static PersistenceManagerFactory get() {
return pmfInstance;
}
public static Compass getCompass(){
return compass;
}
}
any clues?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 12:34 AM, Toby Reyelts to...@google.comwrote:
Vik,
Do you have some sample code to reproduce this? By default, we throw
an exception if you try to create more than one
PersistenceManagerFactory.
Are you using a singleton class to prevent more than one from being
created?
If so, are you maybe loading that singleton class in different
classloaders?
(Try logging the classloader object reference that tries to create the
PersistenceManagerFactory).
Lastly, you can disable the exception if you want (details should be
in the exception message), but it will be a performance problem for you
if
you're creating more than a few PersistenceManagerFactory's.
On Tue, Sep 1, 2009 at 1:51 PM, Vik vik@gmail.com wrote:
anyone any updates on this please?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Sun, Aug 30, 2009 at 8:51 PM, Vik vik@gmail.com wrote:
Hie
Any one using compass on his
[appengine-java] Re: issues with compass for GAE apps
Just to clarify what Jason is saying, the fact that you're seeing two
different UserClassLoader instances in those two requests:
userclassloa...@1f7cdc7 and
userclassloa...@1e6f0ef
means that you're actually looking at two requests for two different
isolated application instances, with each one undergoing its own
initialization.
On Thu, Sep 17, 2009 at 1:19 PM, Jason (Google) apija...@google.com wrote:
Hi Vik. At most a single UserClassLoader is loaded per application
instance. Since you're seeing two output lines in your logs, these two
requests must have hit separate running instances of your application.
In your benchmarking, you need to account for this initialization, i.e.
ignoring requests that are loading requests per application instance, and
keep in mind that you're likely to see several loading requests every time
you upload a change to your application, as new instances are spun up.
- Jason
On Thu, Sep 17, 2009 at 8:33 AM, Vik vik@gmail.com wrote:
hie
in two different requests.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 8:16 PM, Don Schwarz schwa...@google.com wrote:
To be clear, you're getting these two log statements in the same request?
Or subsequent requests?
On Thu, Sep 17, 2009 at 1:48 AM, Vik vik@gmail.com wrote:
hie
any updates on this please?
yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders.
So, how should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 9:01 PM, Vik vik@gmail.com wrote:
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the
static block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular
servlet depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping
the PMF class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized error
for PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.com wrote:
Thanks for the code. I have three suggestions (mostly from my previous
post):
1) Are you maybe loading that singleton class in different
classloaders? Try logging the classloader object reference that tries to
create the PersistenceManagerFactory. You can add a static initializer
ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for
duplicate PMF creations to log a stacktrace first thing every time it's
called. Then you'll know for sure which code paths are causing this to
happen.
3) Disable the check if you're sure you're only creating the PMF a
small number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
private static final Compass compass;
private static final CompassGps compassGps;
static {
compass = new
CompassConfiguration().setConnection(gae://index)
.setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE,
disabled)
.addScan(vik.sakshum.sakshumweb.jsp.model.jdo)
.buildCompass();
compassGps = new SingleCompassGps(compass);
compassGps.addGpsDevice(new Jdo2GpsDevice(appenine,
pmfInstance));
compassGps.start();
compassGps.index();
}
private PMF() {}
public static PersistenceManagerFactory get() {
return pmfInstance;
}
public static Compass getCompass(){
return compass;
}
}
any clues?
Thankx and Regards
Vik
Founder
www.sakshum.com
[appengine-java] Re: issues with compass for GAE apps
Hie
you guys put me in doubt then.
I opened the browser and logged in to my app which created a request to pull
authentication info. and once i logged in i queried a page and this was
another request.
In this process i got the two different UserClassLoader. So, does your
statement holds good?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 11:19 PM, Toby Reyelts to...@google.com wrote:
Just to clarify what Jason is saying, the fact that you're seeing two
different UserClassLoader instances in those two requests:
userclassloa...@1f7cdc7 and
userclassloa...@1e6f0ef
means that you're actually looking at two requests for two different
isolated application instances, with each one undergoing its own
initialization.
On Thu, Sep 17, 2009 at 1:19 PM, Jason (Google) apija...@google.comwrote:
Hi Vik. At most a single UserClassLoader is loaded per application
instance. Since you're seeing two output lines in your logs, these two
requests must have hit separate running instances of your application.
In your benchmarking, you need to account for this initialization, i.e.
ignoring requests that are loading requests per application instance, and
keep in mind that you're likely to see several loading requests every time
you upload a change to your application, as new instances are spun up.
- Jason
On Thu, Sep 17, 2009 at 8:33 AM, Vik vik@gmail.com wrote:
hie
in two different requests.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 8:16 PM, Don Schwarz schwa...@google.comwrote:
To be clear, you're getting these two log statements in the same
request? Or subsequent requests?
On Thu, Sep 17, 2009 at 1:48 AM, Vik vik@gmail.com wrote:
hie
any updates on this please?
yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders.
So, how should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 9:01 PM, Vik vik@gmail.com wrote:
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the
static block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular
servlet depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping
the PMF class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized error
for PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.comwrote:
Thanks for the code. I have three suggestions (mostly from my
previous post):
1) Are you maybe loading that singleton class in different
classloaders? Try logging the classloader object reference that tries to
create the PersistenceManagerFactory. You can add a static initializer
ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for
duplicate PMF creations to log a stacktrace first thing every time it's
called. Then you'll know for sure which code paths are causing this to
happen.
3) Disable the check if you're sure you're only creating the PMF a
small number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
private static final Compass compass;
private static final CompassGps compassGps;
static {
compass = new
CompassConfiguration().setConnection(gae://index)
.setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE,
disabled)
.addScan(vik.sakshum.sakshumweb.jsp.model.jdo)
[appengine-java] Re: issues with compass for GAE apps
Yes, it's quite trivial for two different http requests to land on two
different application instances. You can see if it's an initializing request
for an application instance by logging from an appropriate servlet's init()
method (for example, one that is in the path of the request or is registered
as load-on-startup).
On Thu, Sep 17, 2009 at 2:20 PM, Vik vik@gmail.com wrote:
Hie
you guys put me in doubt then.
I opened the browser and logged in to my app which created a request to
pull authentication info. and once i logged in i queried a page and this was
another request.
In this process i got the two different UserClassLoader. So, does your
statement holds good?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 11:19 PM, Toby Reyelts to...@google.com wrote:
Just to clarify what Jason is saying, the fact that you're seeing two
different UserClassLoader instances in those two requests:
userclassloa...@1f7cdc7 and
userclassloa...@1e6f0ef
means that you're actually looking at two requests for two different
isolated application instances, with each one undergoing its own
initialization.
On Thu, Sep 17, 2009 at 1:19 PM, Jason (Google) apija...@google.comwrote:
Hi Vik. At most a single UserClassLoader is loaded per application
instance. Since you're seeing two output lines in your logs, these two
requests must have hit separate running instances of your application.
In your benchmarking, you need to account for this initialization, i.e.
ignoring requests that are loading requests per application instance, and
keep in mind that you're likely to see several loading requests every time
you upload a change to your application, as new instances are spun up.
- Jason
On Thu, Sep 17, 2009 at 8:33 AM, Vik vik@gmail.com wrote:
hie
in two different requests.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 8:16 PM, Don Schwarz schwa...@google.comwrote:
To be clear, you're getting these two log statements in the same
request? Or subsequent requests?
On Thu, Sep 17, 2009 at 1:48 AM, Vik vik@gmail.com wrote:
hie
any updates on this please?
yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders.
So, how should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 9:01 PM, Vik vik@gmail.com wrote:
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the
static block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular
servlet depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping
the PMF class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized
error for PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.comwrote:
Thanks for the code. I have three suggestions (mostly from my
previous post):
1) Are you maybe loading that singleton class in different
classloaders? Try logging the classloader object reference that tries
to
create the PersistenceManagerFactory. You can add a static initializer
ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for
duplicate PMF creations to log a stacktrace first thing every time it's
called. Then you'll know for sure which code paths are causing this to
happen.
3) Disable the check if you're sure you're only creating the PMF a
small number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory
[appengine-java] Re: issues with compass for GAE apps
So, that concludes
I may expect such request time outs in GAE any time without being able to
fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Fri, Sep 18, 2009 at 12:56 AM, Toby Reyelts to...@google.com wrote:
Yes, it's quite trivial for two different http requests to land on two
different application instances. You can see if it's an initializing request
for an application instance by logging from an appropriate servlet's init()
method (for example, one that is in the path of the request or is registered
as load-on-startup).
On Thu, Sep 17, 2009 at 2:20 PM, Vik vik@gmail.com wrote:
Hie
you guys put me in doubt then.
I opened the browser and logged in to my app which created a request to
pull authentication info. and once i logged in i queried a page and this was
another request.
In this process i got the two different UserClassLoader. So, does your
statement holds good?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 11:19 PM, Toby Reyelts to...@google.com wrote:
Just to clarify what Jason is saying, the fact that you're seeing two
different UserClassLoader instances in those two requests:
userclassloa...@1f7cdc7 and
userclassloa...@1e6f0ef
means that you're actually looking at two requests for two different
isolated application instances, with each one undergoing its own
initialization.
On Thu, Sep 17, 2009 at 1:19 PM, Jason (Google) apija...@google.comwrote:
Hi Vik. At most a single UserClassLoader is loaded per application
instance. Since you're seeing two output lines in your logs, these two
requests must have hit separate running instances of your application.
In your benchmarking, you need to account for this initialization, i.e.
ignoring requests that are loading requests per application instance, and
keep in mind that you're likely to see several loading requests every time
you upload a change to your application, as new instances are spun up.
- Jason
On Thu, Sep 17, 2009 at 8:33 AM, Vik vik@gmail.com wrote:
hie
in two different requests.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 17, 2009 at 8:16 PM, Don Schwarz schwa...@google.comwrote:
To be clear, you're getting these two log statements in the same
request? Or subsequent requests?
On Thu, Sep 17, 2009 at 1:48 AM, Vik vik@gmail.com wrote:
hie
any updates on this please?
yeah I did what you suggested by putting a log statement..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF clinit: Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders.
So, how should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 9:01 PM, Vik vik@gmail.com wrote:
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the
static block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular
servlet depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping
the PMF class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized
error for PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.comwrote:
Thanks for the code. I have three suggestions (mostly from my
previous post):
1) Are you maybe loading that singleton class in different
classloaders? Try logging the classloader object reference that tries
to
create the PersistenceManagerFactory. You can add a static
initializer ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for
duplicate PMF creations to log a stacktrace first thing every time
it's
called. Then you'll know for sure which code paths are causing this to
happen.
3) Disable the check if you're sure you're only creating the PMF a
small number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import
[appengine-java] Re: issues with compass for GAE apps
Hie
Thankx for taking time...
I just adding the static block u mentioned in point 1 just after the static
block i have (in the above mail)
I am sorry I did not get your point 2.
Right now what I do is: every time a request goes to a particular servlet
depending upon application flow and i call
PersistentManager pm = PMF.get().getPersistenceManager();
and then do jdo stuff with GAE.
So, i m not checking any kind of duplicate or anything. I was hoping the PMF
class getInstance which is implemented as a singleton pattern
takes care of all.
Please guide.. my app right now sucks coz of this not intialized error for
PMF.
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 8:42 PM, Toby Reyelts to...@google.com wrote:
Thanks for the code. I have three suggestions (mostly from my previous
post):
1) Are you maybe loading that singleton class in different classloaders?
Try logging the classloader object reference that tries to create the
PersistenceManagerFactory. You can add a static initializer ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, Loading PMF in +
PMF.class.getClassLoader());
}
2) Patch the datanucleus plugin code that makes the check for duplicate PMF
creations to log a stacktrace first thing every time it's called. Then
you'll know for sure which code paths are causing this to happen.
3) Disable the check if you're sure you're only creating the PMF a small
number of times.
On Wed, Sep 2, 2009 at 2:45 AM, Vik vik@gmail.com wrote:
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
private static final Compass compass;
private static final CompassGps compassGps;
static {
compass = new CompassConfiguration().setConnection(gae://index)
.setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE,
disabled)
.addScan(vik.sakshum.sakshumweb.jsp.model.jdo)
.buildCompass();
compassGps = new SingleCompassGps(compass);
compassGps.addGpsDevice(new Jdo2GpsDevice(appenine, pmfInstance));
compassGps.start();
compassGps.index();
}
private PMF() {}
public static PersistenceManagerFactory get() {
return pmfInstance;
}
public static Compass getCompass(){
return compass;
}
}
any clues?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 12:34 AM, Toby Reyelts to...@google.com wrote:
Vik,
Do you have some sample code to reproduce this? By default, we throw an
exception if you try to create more than one PersistenceManagerFactory. Are
you using a singleton class to prevent more than one from being created? If
so, are you maybe loading that singleton class in different classloaders?
(Try logging the classloader object reference that tries to create the
PersistenceManagerFactory).
Lastly, you can disable the exception if you want (details should be in
the exception message), but it will be a performance problem for you if
you're creating more than a few PersistenceManagerFactory's.
On Tue, Sep 1, 2009 at 1:51 PM, Vik vik@gmail.com wrote:
anyone any updates on this please?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Sun, Aug 30, 2009 at 8:51 PM, Vik vik@gmail.com wrote:
Hie
Any one using compass on his GAE app?
I am frequently getting error cannot initialize PMF where there is
static code to initialize compass apis.
Any idea how to resolve?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Google App Engine for Java group.
To post to this group, send email to google-appengine-java@googlegroups.com
To unsubscribe from this group, send email to
google-appengine-java+unsubscr...@googlegroups.com
For more options, visit this group at
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-~--~~~~--~~--~--~---
[appengine-java] Re: issues with compass for GAE apps
Hie
here is the code I am using:
package vik.sakshum.sakshumweb.jsp.model.jdo;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;
import org.compass.core.Compass;
import org.compass.core.config.CompassConfiguration;
import org.compass.core.config.CompassEnvironment;
import org.compass.gps.CompassGps;
import org.compass.gps.device.jdo.Jdo2GpsDevice;
import org.compass.gps.impl.SingleCompassGps;
public final class PMF {
private static final PersistenceManagerFactory pmfInstance =
JDOHelper.getPersistenceManagerFactory(transactions-optional);
private static final Compass compass;
private static final CompassGps compassGps;
static {
compass = new CompassConfiguration().setConnection(gae://index)
.setSetting(CompassEnvironment.ExecutorManager.EXECUTOR_MANAGER_TYPE,
disabled)
.addScan(vik.sakshum.sakshumweb.jsp.model.jdo)
.buildCompass();
compassGps = new SingleCompassGps(compass);
compassGps.addGpsDevice(new Jdo2GpsDevice(appenine, pmfInstance));
compassGps.start();
compassGps.index();
}
private PMF() {}
public static PersistenceManagerFactory get() {
return pmfInstance;
}
public static Compass getCompass(){
return compass;
}
}
any clues?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Wed, Sep 2, 2009 at 12:34 AM, Toby Reyelts to...@google.com wrote:
Vik,
Do you have some sample code to reproduce this? By default, we throw an
exception if you try to create more than one PersistenceManagerFactory. Are
you using a singleton class to prevent more than one from being created? If
so, are you maybe loading that singleton class in different classloaders?
(Try logging the classloader object reference that tries to create the
PersistenceManagerFactory).
Lastly, you can disable the exception if you want (details should be in the
exception message), but it will be a performance problem for you if you're
creating more than a few PersistenceManagerFactory's.
On Tue, Sep 1, 2009 at 1:51 PM, Vik vik@gmail.com wrote:
anyone any updates on this please?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Sun, Aug 30, 2009 at 8:51 PM, Vik vik@gmail.com wrote:
Hie
Any one using compass on his GAE app?
I am frequently getting error cannot initialize PMF where there is static
code to initialize compass apis.
Any idea how to resolve?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Google App Engine for Java group.
To post to this group, send email to google-appengine-java@googlegroups.com
To unsubscribe from this group, send email to
google-appengine-java+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/google-appengine-java?hl=en
-~--~~~~--~~--~--~---
[appengine-java] Re: issues with compass for GAE apps
Vik, Do you have some sample code to reproduce this? By default, we throw an exception if you try to create more than one PersistenceManagerFactory. Are you using a singleton class to prevent more than one from being created? If so, are you maybe loading that singleton class in different classloaders? (Try logging the classloader object reference that tries to create the PersistenceManagerFactory). Lastly, you can disable the exception if you want (details should be in the exception message), but it will be a performance problem for you if you're creating more than a few PersistenceManagerFactory's. On Tue, Sep 1, 2009 at 1:51 PM, Vik vik@gmail.com wrote: anyone any updates on this please? Thankx and Regards Vik Founder www.sakshum.com www.sakshum.blogspot.com On Sun, Aug 30, 2009 at 8:51 PM, Vik vik@gmail.com wrote: Hie Any one using compass on his GAE app? I am frequently getting error cannot initialize PMF where there is static code to initialize compass apis. Any idea how to resolve? Thankx and Regards Vik Founder www.sakshum.com www.sakshum.blogspot.com --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Google App Engine for Java group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
