[google-appengine] Re: GAE keeps starting new instances causing lots of user facing loading requests

[Francois Masurel]

The problem is still there :


We can see above a 7 seconds user-facing loading request.

Francois

On Saturday, November 17, 2012 4:21:28 PM UTC+1, Francois Masurel wrote:
>
> I've notice lots of user facing loading requests since a few hours (days?).
>
> Just check the screenshot below.  Two new instances have been started to 
> serve only 13 (12 + 1) requests though another instance was already running 
> and available and obviously was not overloaded as it had only served 105 
> requests during the last hour :
>
>
> 
>
> My application instance settings are all set to automatic and pending 
> latency set to 10s :
>
>
> 
>
> Did something change on GAE side recently ?
>
> These user facing loading requests are really killing my business as my 
> users are getting really upset about it.
>
> Thanx for your help.
>
> François
>
> App Id = vncts1
>

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Re: [google-appengine] Re: need urgent help

[Thiago Catoto]

Hi Vik,

Can you post your persistence.xml?

Do you have this line on it? (Or some think like it?)




On Tue, Jan 8, 2013 at 8:19 PM, Vik  wrote:

> some please help us on this issue
>
> Thankx and Regards
>
> Vik
> Founder
> http://www.sakshum.org
> http://blog.sakshum.org
>
>
> On Mon, Jan 7, 2013 at 4:34 PM, Vik  wrote:
>
>> can some one help us on this please? becoming a blocking issue
>>
>> Thankx and Regards
>>
>> Vik
>> Founder
>> http://www.sakshum.org
>> http://blog.sakshum.org
>>
>>
>> On Tue, Jan 1, 2013 at 8:00 PM, Vik  wrote:
>>
>>> Hello
>>>
>>> Happy new year to the members!
>>>
>>> Can someone please help us on
>>> http://stackoverflow.com/questions/14016052/why-do-i-get-persistence-manager-has-been-closed-exception
>>>
>>>
>>> Thankx and Regards
>>>
>>> Vik
>>> Founder
>>> http://www.sakshum.org
>>> http://blog.sakshum.org
>>>
>>
>>
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[google-appengine] Infinity start backend by a cron job

[José Luis Montesinos González]

Hello, I developed an app with GAE/J and I created a cron job like this:



  
/cron/v1/cleanDB
Clean Data Base
every day 04:00
clean-db
  


Also, I defined this backend:

  
B1

true

  



My cron job and backend are always working fine, but one day when the crob 
job was woken and the backend must have started, It consumed 46858162ms 
(13h) and I received this error:

2013-01-05 18:01:00.669 /_ah/start 500 46858162ms 0kb instance=0 

   1. 
  1.  I 2013-01-05 18:01:00.669 This request caused a new process to be 
  started for your application, and thus caused your application code to be 
  loaded for the first time. This requ 
  2.  E 2013-01-05 18:01:00.669 Process terminated because the backend 
  took too long to shutdown.
   
Then, I received multiples errors every 200ms:

   1. 
  1.  2013-01-05 18:01:20.370 /cron/v1/cleanDB 503 4ms 0kb 
AppEngine-Google; 
  (+http://code.google.com/appengine) 
  
  0.1.0.1 - - [05/Jan/2013:09:01:20 -0800] "GET /cron/v1/cleanDB HTTP/1.1" 
503 970 - "AppEngine-Google; (+http://code.google.com/appengine)" 
"clean-bd.categoriasidintel.appspot.com" ms=4 cpu_ms=0 cpm_usd=0.000108 
queue_name=__cron task_name=a96f2b757c5cbc0b3811e7a105fe7f0b 
  
  
This error consumes my free 9h of backends (I do not allow even billing)

Well, what was the problem? Maybe it was a causal problem, but I am very 
disappointed 
with GAE, though I have enabled billing, how much would it cost? 
Is there any way to prevent this kind of thing?

Thanks

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[google-appengine] Cannot read data from datastore that has just been persisted

[Dirk Vranckaert]

I'm building some kind of synchronization service on AE (I'm still in my 
first month of GA experience) and the first step in my sync process is to 
sync a bunch of projects.
I do checks if I have to persist the project, update the project or just 
ignore the incoming project.
Next step is to sync tasks. But the tasks have a reference to a project 
(not necessarily the one of the projects synced before, but it can). And 
there the problem happens.

So in my test case I have persisted a project, then I do a lookup to find 
the project for which I want to sync a task. But the project is not found 
because it has just been created in step 1 and thus not comitted yet. At 
least I think that is the reason.

If I do another test-case in which a task is synced for a project that is 
already available in the database, the test case succeeds. So I'm not 
exactly sure what the exact problem is, but if I just persisted an object I 
cannot load it a second later...
So for me it must be or caching related or the transaction because it's not 
yet comitted...

Any help would be appreciated.. :-)

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[google-appengine] Re: Getting Access-Control-Allow-Origin header for images stored in Appengine Blobstore for use in canvas tag.

[youri]

I was looking for the exact same feature, apparently is has not been 
implemented yet. I assume you were referring to this 
request? http://code.google.com/p/googleappengine/issues/detail?id=5059

On Saturday, February 25, 2012 9:20:38 PM UTC+1, andrew wrote:
>
> We have a feature request in for controlling headers by resource type 
> for this, cross domain requests for images, fonts, etc. 
>
> If you can find it, star it. 
> Otherwise, let me know and can find it for you later. 
>
> On Feb 25, 10:49 am, Vinuth Madinur  wrote: 
> > Had posted this on Stackoverflow, since I didn't see any response there, 
> > retrying to start the conversation here. 
> > 
> > I hit upon this problem while trying to display image in a canvas to 
> fetch 
> > it's color properties. However, since the image from blobstore is served 
> > from a different domain, the canvas gets tainted. Is there a workaround 
> for 
> > this problem? Shouldn't blobstore be sending the 
> > Access-Control-Allow-Origin header based on the requesting domain and 
> > whether the domain owns the content?

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Re: [google-appengine] Exporting data into PDF cannot support by Google app engine

[Takashi Matsuo]

Hi Manoj,

For older version of iText, you need to patch it or use an altered version
specific to App Engine.
Here is an instance of such a version(sorry it's a Japanese article though):
http://d.hatena.ne.jp/kaorumori/20091125/1259149632

Additionally, it seems that you can use iText5 with App Engine without any
modification, i've not tried it by myself though.

-- Takashi


On Tue, Jan 8, 2013 at 7:35 PM, Manoj Kumar wrote:

> Dear Sir/Madam,
>   I am Manoj Kumar working in a software company. we are accessing
>  the services from  google app engine in our project. we
> are registered with google co-operation.
> Sir, When i am trying to export the data using java programming language ,
> It is not supporting "FileOutPutStream" class, and it is not supporting
> iText and jasper tools to exporting into PDF.
>
> please let us know ,How to  export our   data into PDF format using google
> app engine.
>
>
> ---
> Thanks and Regards
> S.Manoj Kumar,
> manoj...@vasudhaika.net
>
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Re: [google-appengine] Infinity start backend by a cron job

[Takashi Matsuo]

Hi José,

Your cron entry has a target 'clean-db', but the log indicates the backend
name is clean-bd. Which is correct?
How long does the cron job take BTW?
I think the reason why your free quota was consumed is that the cron job
took 13h, wasn't it?

However, those errors seem weird to me too. I'll look into them and keep
you updated.


On Wed, Jan 9, 2013 at 8:46 AM, José Luis Montesinos González <
joseluismg...@gmail.com> wrote:

> Hello, I developed an app with GAE/J and I created a cron job like this:
>
> 
> 
>   
> /cron/v1/cleanDB
> Clean Data Base
> every day 04:00
> clean-db
>   
> 
>
> Also, I defined this backend:
> 
>   
> B1
> 
> true
> 
>   
> 
>
>
> My cron job and backend are always working fine, but one day when the crob
> job was woken and the backend must have started, It consumed 46858162ms
> (13h) and I received this error:
>
> 2013-01-05 18:01:00.669 /_ah/start 500 46858162ms 0kb instance=0
>
>1.
>   1.  I 2013-01-05 18:01:00.669 This request caused a new process to
>   be started for your application, and thus caused your application code 
> to
>   be loaded for the first time. This requ
>   2.  E 2013-01-05 18:01:00.669 Process terminated because the
>   backend took too long to shutdown.
>
> Then, I received multiples errors every 200ms:
>
>1.
>   1.  2013-01-05 18:01:20.370 /cron/v1/cleanDB 503 4ms 0kb 
> AppEngine-Google;
>   (+http://code.google.com/appengine)
>
>   0.1.0.1 - - [05/Jan/2013:09:01:20 -0800] "GET /cron/v1/cleanDB 
> HTTP/1.1" 503 970 - "AppEngine-Google; (+http://code.google.com/appengine)" 
> "clean-bd.categoriasidintel.appspot.com" ms=4 cpu_ms=0 cpm_usd=0.000108 
> queue_name=__cron task_name=a96f2b757c5cbc0b3811e7a105fe7f0b
>
>
> This error consumes my free 9h of backends (I do not allow even billing)
>
> Well, what was the problem? Maybe it was a causal problem, but I am very 
> disappointed
> with GAE, though I have enabled billing, how much would it cost?
> Is there any way to prevent this kind of thing?
>
> Thanks
>
> --
> You received this message because you are subscribed to the Google Groups
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Re: [google-appengine] Infinity start backend by a cron job

[Takashi Matsuo]

Okay, I noticed that the cron job in question was stopped because you had
consumed the daily free quota for the backend usage on Jan 5.

I think the following errors were made by the retry logic of our task queue
service. Is that the case? Are you invoking any tasks within the cron job
itself? If so, those tasks were failed because there was no quota for the
backend.



On Wed, Jan 9, 2013 at 10:55 AM, Takashi Matsuo  wrote:

>
> Hi José,
>
> Your cron entry has a target 'clean-db', but the log indicates the backend
> name is clean-bd. Which is correct?
> How long does the cron job take BTW?
> I think the reason why your free quota was consumed is that the cron job
> took 13h, wasn't it?
>
> However, those errors seem weird to me too. I'll look into them and keep
> you updated.
>
>
> On Wed, Jan 9, 2013 at 8:46 AM, José Luis Montesinos González <
> joseluismg...@gmail.com> wrote:
>
>> Hello, I developed an app with GAE/J and I created a cron job like this:
>>
>> 
>> 
>>   
>> /cron/v1/cleanDB
>> Clean Data Base
>> every day 04:00
>> clean-db
>>   
>> 
>>
>> Also, I defined this backend:
>> 
>>   
>> B1
>> 
>> true
>> 
>>   
>> 
>>
>>
>> My cron job and backend are always working fine, but one day when the
>> crob job was woken and the backend must have started, It consumed 46858162ms
>> (13h) and I received this error:
>>
>> 2013-01-05 18:01:00.669 /_ah/start 500 46858162ms 0kb instance=0
>>
>>1.
>>   1.  I 2013-01-05 18:01:00.669 This request caused a new process to
>>   be started for your application, and thus caused your application code 
>> to
>>   be loaded for the first time. This requ
>>   2.  E 2013-01-05 18:01:00.669 Process terminated because the
>>   backend took too long to shutdown.
>>
>> Then, I received multiples errors every 200ms:
>>
>>1.
>>   1.  2013-01-05 18:01:20.370 /cron/v1/cleanDB 503 4ms 0kb 
>> AppEngine-Google;
>>   (+http://code.google.com/appengine)
>>
>>   0.1.0.1 - - [05/Jan/2013:09:01:20 -0800] "GET /cron/v1/cleanDB 
>> HTTP/1.1" 503 970 - "AppEngine-Google; (+http://code.google.com/appengine)" 
>> "clean-bd.categoriasidintel.appspot.com" ms=4 cpu_ms=0 cpm_usd=0.000108 
>> queue_name=__cron task_name=a96f2b757c5cbc0b3811e7a105fe7f0b
>>
>>
>> This error consumes my free 9h of backends (I do not allow even billing)
>>
>> Well, what was the problem? Maybe it was a causal problem, but I am very 
>> disappointed
>> with GAE, though I have enabled billing, how much would it cost?
>> Is there any way to prevent this kind of thing?
>>
>> Thanks
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Google App Engine" group.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msg/google-appengine/-/y_b71bjBtZ0J.
>> To post to this group, send email to google-appengine@googlegroups.com.
>> To unsubscribe from this group, send email to
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>> http://groups.google.com/group/google-appengine?hl=en.
>>
>
>
>
> --
> Takashi Matsuo | Developers Advocate | tmat...@google.com
>



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[google-appengine] Re: Cannot read data from datastore that has just been persisted

[AndyD]

This might 
help: 
http://stackoverflow.com/questions/12358372/how-to-junit-test-entity-persistence-with-hrd-w-o-parent-relationship

If you're using Eclipse, the "unapplied job percentage" is specified in the 
App Engine tab of the Run Configurations dialog.

-Andy

On Wednesday, January 9, 2013 10:36:47 AM UTC-5, Dirk Vranckaert wrote:
>
> I'm building some kind of synchronization service on AE (I'm still in my 
> first month of GA experience) and the first step in my sync process is to 
> sync a bunch of projects.
> I do checks if I have to persist the project, update the project or just 
> ignore the incoming project.
> Next step is to sync tasks. But the tasks have a reference to a project 
> (not necessarily the one of the projects synced before, but it can). And 
> there the problem happens.
>
> So in my test case I have persisted a project, then I do a lookup to find 
> the project for which I want to sync a task. But the project is not found 
> because it has just been created in step 1 and thus not comitted yet. At 
> least I think that is the reason.
>
> If I do another test-case in which a task is synced for a project that is 
> already available in the database, the test case succeeds. So I'm not 
> exactly sure what the exact problem is, but if I just persisted an object I 
> cannot load it a second later...
> So for me it must be or caching related or the transaction because it's 
> not yet comitted...
>
> Any help would be appreciated.. :-)
>

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Re: [google-appengine] Re: need urgent help

[Vik]

i do not have this file at all in my workspace. plz advise

Thankx and Regards

Vik
Founder
http://www.sakshum.org
http://blog.sakshum.org


On Wed, Jan 9, 2013 at 5:28 AM, Thiago Catoto  wrote:

> Hi Vik,
>
> Can you post your persistence.xml?
>
> Do you have this line on it? (Or some think like it?)
>
>  value="true"/>
>
>
> On Tue, Jan 8, 2013 at 8:19 PM, Vik  wrote:
>
>> some please help us on this issue
>>
>> Thankx and Regards
>>
>> Vik
>> Founder
>> http://www.sakshum.org
>> http://blog.sakshum.org
>>
>>
>> On Mon, Jan 7, 2013 at 4:34 PM, Vik  wrote:
>>
>>> can some one help us on this please? becoming a blocking issue
>>>
>>> Thankx and Regards
>>>
>>> Vik
>>> Founder
>>> http://www.sakshum.org
>>> http://blog.sakshum.org
>>>
>>>
>>> On Tue, Jan 1, 2013 at 8:00 PM, Vik  wrote:
>>>
 Hello

 Happy new year to the members!

 Can someone please help us on
 http://stackoverflow.com/questions/14016052/why-do-i-get-persistence-manager-has-been-closed-exception


 Thankx and Regards

 Vik
 Founder
 http://www.sakshum.org
 http://blog.sakshum.org

>>>
>>>
>>  --
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[google-appengine] Error 302 on downloading appengine source code

[sofia]

Hi,

When attempting to download the source code this is what I get

appcfg.py download_app --insecure -A appid  .
12:34 AM Host: appengine.google.com
12:34 AM Fetching file list...
Error 302: --- begin server output ---

--- end server output ---

The app is in 2.5, locally I have 2.7. Can anyone help? I really need the 
source..

Thanks

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Re: [google-appengine] Re: Urgent, Need Help: Instances are shutting down after a couple minutes of inactivity.

[Mike Brown]

I'm experiencing this problem as well and can not demo my app.

app id: gobandpass

For me each request is starting a new instance thus causing long response 
times.

I am in development and therefore the only person on the app. So I can 
clearly see for each client request
a new instance is being started.

Performance settings are (and always have been) automatic, automatic for 
both instance and latency which
always seemed to work fine until now.

Note, timing wise, I deployed an app on 12/13 and everything tested out 
fine.  Then on 1/8 I deployed again and now have this problem.
In between these dates I was working locally and therefore would not notice 
exactly when this problem cropped up. Somewhere between 12/3 and 1/8.


On Thursday, December 27, 2012 1:18:47 PM UTC-8, Saket Kumar wrote:
>
> Hi Carl,
>
> Can you let me know your app-id?
>
> Regards,
> Saket
>
> On Thursday, 27 December 2012 20:01:30 UTC+1, Carl Schroeder wrote:
>>
>> I am still seeing java instances decomissioned after sub minute quiet 
>> periods.  Given that it takes 20-30 seconds to spin one java instance up, 
>> you should probably leave them alive for a bit longer than a few seconds. 
>> Otherwise, for low traffic profiles, page loads for GAE java can take up to 
>> 30 seconds. God help us if the scheduler thinks I need 2 new instances spun 
>> up in series rather than parallel.
>>
>> FYI, people don't wait around for a minute for pages to load. They use 
>> other services.
>>
>> Once again, due to unannounced pathological behavior of the instancing on 
>> GAE, we are wasting our time re-implementing our java infrastructure on 
>> AWS. At least, I hope it is a waste of our time...
>>
>>
>> On Tuesday, December 25, 2012 4:00:26 PM UTC-8, Francois Masurel wrote:
>>>
>>> Hi Saket,
>>>
>>> Thanx for investigating the problem.
>>>
>>> Things seems to have improved significantly these last few days.
>>>
>>> On our Neustar reports, for an average page loading, we can see that we 
>>> went from 
>>> 6.65s
>>>  (12/16) 
>>> to 8.94s (12/18) and back to 
>>> 2.57s
>>>  (12/23).
>>>
>>> I can confirm that we don't see as much instance warm ups in our logs as 
>>> we were used before, we went from every 3-4 minutes to 20-25 minutes.
>>>
>>> I definitely think things have changed on Google side as we haven't 
>>> changed anything on our side.
>>>
>>> But some strange things are still going on at the moment (12/26 0:52 
>>> UTC+1) as a dynamic instance has been up for more than 4 hours but has 
>>> served only one request (cf. screenshot below).
>>>
>>> Thanx again Saket for your help.
>>>
>>> François
>>>
>>>
>>> 
>>>
>>>
>>>
>>>
>>> On Monday, December 24, 2012 11:54:48 PM UTC+1, Saket Kumar wrote:

 Hi Francois,

 Are you still facing this issue? I did a small test for your 
 application and didn't find anything too bad from scheduler's perspective. 
 I'm trying to understand if it was a temporary glitch that was causing the 
 issue or something is wrong with scheduler's algorithm. Or if scheduler 
 doesn't spin instances properly if QPS is low.

 Here is series of events- 

 a.) Single resident was serving for 1 day, 03:26:37 minutes, serving 
 9600 request
 b.) After serving 96 requests with raised QPS, new instance was created.
 c.) QPS lowered and the new instance was allowed to die.
 d.) Again the QPS was increased and new instance was created. Both 
 instances were handling requests at this point.
 e.) QPS lowered again, newly formed instance dies and older instance 
 starts serving 100% of the requests.

 -
 Saket

 On Saturday, 22 December 2012 12:18:00 UTC+1, Francois Masurel wrote:
>
> Hi Christina,
>
> For my personal case, my production app-id is "vncts1" with billing 
> enabled.
>
> And the related issue is : 
> https://code.google.com/p/googleappengine/issues/detail?id=7865
>
> As I said at the beginning of this thread, there are quite a few other 
> threads related to this problem :
>
>
> https://groups.google.com/forum/#!msg/google-appengine/cJcOrOE4JDc/uKFBbylFOxIJ
>
> https://groups.google.com/d/msg/google-appengine/8KiXRP-oU5I/Jf5kzcvyIiwJ
>
> https://groups.google.com/d/msg/google-appengine/NR_oV4znvks/KtkSmVQD2IgJ
>
> https://groups.google.com/d/msg/google-appengine/_znmrJwFMuM/V2epYOQ19L4J
>
> https://groups.google.com/d/topic/google-appengine/hg

[google-appengine] Re: GAE keeps starting new instances causing lots of user facing loading requests

[Jim Briggs]

I'm having the same problem and have been having it for at least a week.  
Instances get started while other instances are not being used.  I wonder 
what the commonality is between your and my problem.  I'm also using a 
custom domain.  I've tried different configurations of idle instances and 
pending latency and nothing seems to make a difference.  I wonder why more 
people aren't complaining about this problem.



On Wednesday, January 9, 2013 5:46:20 AM UTC-5, Francois Masurel wrote:
>
> The problem is still there :
>
>
> 
> We can see above a 7 seconds user-facing loading request.
>
> Francois
>
> On Saturday, November 17, 2012 4:21:28 PM UTC+1, Francois Masurel wrote:
>>
>> I've notice lots of user facing loading requests since a few hours 
>> (days?).
>>
>> Just check the screenshot below.  Two new instances have been started to 
>> serve only 13 (12 + 1) requests though another instance was already running 
>> and available and obviously was not overloaded as it had only served 105 
>> requests during the last hour :
>>
>>
>> 
>>
>> My application instance settings are all set to automatic and pending 
>> latency set to 10s :
>>
>>
>> 
>>
>> Did something change on GAE side recently ?
>>
>> These user facing loading requests are really killing my business as my 
>> users are getting really upset about it.
>>
>> Thanx for your help.
>>
>> François
>>
>> App Id = vncts1
>>
>

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[google-appengine] Index Building seems to be stuck

[John Del Rosario]

Hello, 

I added a new index to my app and it's been building for a couple of hours 
now. I think it may be stuck. Posting here 
via https://developers.google.com/appengine/kb/general?hl=en#stuck_indexes

Thanks,
John

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