[appengine-java] does the Google AppEngine or WebToolkit replace the bootclasspath of the running Java runtime?
Hi, I used the open-jdk workaround to solve the problems introduced by the latest apple java sdk update but have a question an Apple engineer asked me about the following: http://code.google.com/p/googleappengine/issues/detail?id=4712 http://code.google.com/p/google-web-toolkit/issues/detail?id=6125 does the Google AppEngine or WebToolkit replace the bootclasspath of the running Java runtime? From the crash reports I've seen, we should only be failing in native in this way if a couple of new classes we introduced are not present. I'm not sure how to explain it, but since the problem appears to be isolated to these Google tools, I can only speculate that this is the work of JVM wizards who are somehow replacing our universe with their own. I don't think AE or GWT do that, do they? Shawn -- 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: Datastore throwing exception while putting entity.
Hi, Are you using queued tasks ? This can of error may appear then. It appears on the dev server when the Task Queue env in not correctly started. regards didier On Mar 12, 8:03 am, dalchand choudhary dc4...@gmail.com wrote: Hi, I am using App Engine Locally with eclipse and while operating put on datastore using IterableEntity object (datastrore.put(entityList)) I am getting this Exception. com.google.appengine.api.datastore.DatastoreFailureException: handle 16 not found at com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:53) at com.google.appengine.api.datastore.DatastoreApiHelper$1.convertException(DatastoreApiHelper.java:98) at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:69) at com.google.appengine.api.datastore.FutureHelper$CumulativeAggregateFuture.get(FutureHelper.java:136) at com.google.appengine.api.datastore.FutureHelper$TxnAwareFuture.get(FutureHelper.java:213) at com.google.appengine.api.datastore.FutureHelper.getInternal(FutureHelper.java:71) at com.google.appengine.api.datastore.FutureHelper.quietGet(FutureHelper.java:32) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:113) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:110) at com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java:31) at com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:110) Please help. -- 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.
Re: [appengine-java] Re: Datastore throwing exception while putting entity.
No I am only testing locally using eclipse debugger. On Sat, Mar 12, 2011 at 3:55 PM, Didier Durand durand.did...@gmail.comwrote: Hi, Are you using queued tasks ? This can of error may appear then. It appears on the dev server when the Task Queue env in not correctly started. regards didier On Mar 12, 8:03 am, dalchand choudhary dc4...@gmail.com wrote: Hi, I am using App Engine Locally with eclipse and while operating put on datastore using IterableEntity object (datastrore.put(entityList)) I am getting this Exception. com.google.appengine.api.datastore.DatastoreFailureException: handle 16 not found at com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:53) at com.google.appengine.api.datastore.DatastoreApiHelper$1.convertException(DatastoreApiHelper.java:98) at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:69) at com.google.appengine.api.datastore.FutureHelper$CumulativeAggregateFuture.get(FutureHelper.java:136) at com.google.appengine.api.datastore.FutureHelper$TxnAwareFuture.get(FutureHelper.java:213) at com.google.appengine.api.datastore.FutureHelper.getInternal(FutureHelper.java:71) at com.google.appengine.api.datastore.FutureHelper.quietGet(FutureHelper.java:32) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:113) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:110) at com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java:31) at com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:110) Please help. -- 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. -- Dal Chand Choudhary Research Engineer DataResolve Technologies Pvt. Ltd. Kolkata, India. -- 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: GAE on Mac OS X not working on local Jetty
Hi guys, I seem to be running into the same or a similar problem when trying to run a GAE app in dev mode on MacOS. Have you looked in your system.log (e.g. using Console.app)? I am getting: Mar 12 12:29:40 Stefans-MacBook java[1407]: [Java CocoaComponent compatibility mode]: Enabled Mar 12 12:29:40 Stefans-MacBook java[1407]: [Java CocoaComponent compatibility mode]: Setting timeout for SWT to 0.10 Mar 12 12:29:45 Stefans-MacBook mds[35]: (Warning) Server: No stores registered for metascope kMDQueryScopeComputer Mar 12 12:29:45 Stefans-MacBook ReportCrash[1409]: Saved crash report for java[1407] version 1.0 (1.0) to /Users/Stefan/Library/Logs/DiagnosticReports/java_2011-03-12-122945_Stefans-MacBook.crash In the crash-report file mentioned above I am seeing the following: Process: java [1362] Path: /System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/bin/java Identifier: java Version: 1.0 (1.0) Code Type: X86 (Native) Parent Process: eclipse [1242] Date/Time: 2011-03-12 12:15:57.436 +0100 OS Version: Mac OS X 10.6.6 (10J567) Report Version: 6 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x Crashed Thread: 10 Dispatch queue: com.apple.root.low-priority (Followed by a bunch of info about different processes.) I don't really know what to make of this. I have tried launching the GAE devmode using an older JRE-version but this does not help. According to Apple the EXC_BAC_ACCESS / KERN_PROTECTION_FAILURE: This is caused by the thread trying to write to read-only memory. This is always caused by a data access. [1] I am running Snow Leopard with the most recent Java Update and the most recent GAE SDK. Anybody else got any thoughts in this? Stefan [1] http://developer.apple.com/library/mac/#technotes/tn2004/tn2123.html#SECCRASHLOGBASIC -- 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: GAE on Mac OS X not working on local Jetty
Just found another thread about this error which seems to have solution for this problem (I haven't tried it yet): http://code.google.com/intl/de-DE/appengine/forum/java-forum.html?place=topic%2Fgoogle-appengine-java%2FWiImnzVb9Fo%2Fdiscussion I suggest we continue over there. -- 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: Datastore throwing exception while putting entity.
Another try: did you start the local ds like said in http://code.google.com/appengine/docs/java/tools/localunittesting.html#Writing_Datastore_Tests ? regards didier On Mar 12, 11:27 am, dalchand choudhary dc4...@gmail.com wrote: No I am only testing locally using eclipse debugger. On Sat, Mar 12, 2011 at 3:55 PM, Didier Durand durand.did...@gmail.comwrote: Hi, Are you using queued tasks ? This can of error may appear then. It appears on the dev server when the Task Queue env in not correctly started. regards didier On Mar 12, 8:03 am, dalchand choudhary dc4...@gmail.com wrote: Hi, I am using App Engine Locally with eclipse and while operating put on datastore using IterableEntity object (datastrore.put(entityList)) I am getting this Exception. com.google.appengine.api.datastore.DatastoreFailureException: handle 16 not found at com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:53) at com.google.appengine.api.datastore.DatastoreApiHelper$1.convertException(DatastoreApiHelper.java:98) at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:69) at com.google.appengine.api.datastore.FutureHelper$CumulativeAggregateFuture.get(FutureHelper.java:136) at com.google.appengine.api.datastore.FutureHelper$TxnAwareFuture.get(FutureHelper.java:213) at com.google.appengine.api.datastore.FutureHelper.getInternal(FutureHelper.java:71) at com.google.appengine.api.datastore.FutureHelper.quietGet(FutureHelper.java:32) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:113) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:110) at com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java:31) at com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:110) Please help. -- 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. -- Dal Chand Choudhary Research Engineer DataResolve Technologies Pvt. Ltd. Kolkata, India. -- 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.
Re: [appengine-java] Re: Datastore throwing exception while putting entity.
I figured out something. This exception comes when I wait at some debug point while the transaction is on. Is this some bug or is there a time limit over transaction period ?. If so how should I make my application fail safe. On Sat, Mar 12, 2011 at 6:50 PM, Didier Durand durand.did...@gmail.comwrote: Another try: did you start the local ds like said in http://code.google.com/appengine/docs/java/tools/localunittesting.html#Writing_Datastore_Tests ? regards didier On Mar 12, 11:27 am, dalchand choudhary dc4...@gmail.com wrote: No I am only testing locally using eclipse debugger. On Sat, Mar 12, 2011 at 3:55 PM, Didier Durand durand.did...@gmail.com wrote: Hi, Are you using queued tasks ? This can of error may appear then. It appears on the dev server when the Task Queue env in not correctly started. regards didier On Mar 12, 8:03 am, dalchand choudhary dc4...@gmail.com wrote: Hi, I am using App Engine Locally with eclipse and while operating put on datastore using IterableEntity object (datastrore.put(entityList)) I am getting this Exception. com.google.appengine.api.datastore.DatastoreFailureException: handle 16 not found at com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:53) at com.google.appengine.api.datastore.DatastoreApiHelper$1.convertException(DatastoreApiHelper.java:98) at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:69) at com.google.appengine.api.datastore.FutureHelper$CumulativeAggregateFuture.get(FutureHelper.java:136) at com.google.appengine.api.datastore.FutureHelper$TxnAwareFuture.get(FutureHelper.java:213) at com.google.appengine.api.datastore.FutureHelper.getInternal(FutureHelper.java:71) at com.google.appengine.api.datastore.FutureHelper.quietGet(FutureHelper.java:32) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:113) at com.google.appengine.api.datastore.DatastoreServiceImpl$2.runInternal(DatastoreServiceImpl.java:110) at com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java:31) at com.google.appengine.api.datastore.DatastoreServiceImpl.put(DatastoreServiceImpl.java:110) Please help. -- 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. -- Dal Chand Choudhary Research Engineer DataResolve Technologies Pvt. Ltd. Kolkata, India. -- 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. -- Dal Chand Choudhary Research Engineer DataResolve Technologies Pvt. Ltd. Kolkata, India. -- 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] how to create an index in the datastore?
Hello everyone, I ask you to help me understand if and how I can create an index in the datastore then be used in the query. Thanks to all -- 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.
Re: [appengine-java] how to create an index in the datastore?
You can configure datastore-index.xml file so that the entities automatically get indexed according to your requirement. On Sat, Mar 12, 2011 at 7:13 PM, piero88 piero.vit...@studenti.unimi.itwrote: Hello everyone, I ask you to help me understand if and how I can create an index in the datastore then be used in the query. Thanks to all -- 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. -- Dal Chand Choudhary Research Engineer DataResolve Technologies Pvt. Ltd. Kolkata, India. -- 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.
Re: [appengine-java] Re: Weird performance problem last 3 days or so
I've had similar issues since the past three days. Since I was out on vacation for the week, I'm fairly certain that it wasn't because of anything I changed. The first symptom was when my warmup requests ate up all of my daily quota because I was getting HDEE's all day on Wednesday. This had never happened before. My first suspicion was a long term memory issue with my app since it had been running for a few days. However, since uploading newer versions, I continue to see the same degraded performance. Since late Tuesday, all requests seem to take much longer with a high percentage getting killed due to HDEE. Has something changed on the platform this week? In the mean time, I'm instrumenting for app stats to see if I can get a handle on bottlenecks. ~Michael -- 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.
Re: [appengine-java] Re: Weird performance problem last 3 days or so
For what it's worth. About the same time, I developed an issue on my dev machine, a (Mac), that seems to be related to the recent Java SE Update 4 release. There a thread on the issue herehttp://code.google.com/appengine/forum/java-forum.html?place=msg%2Fgoogle-appengine-java%2FP6bBEiRB_xQ%2F1stMGk1klSgJ . Any chance the newly released Java update could be impacting performance on app engine (may be a stretch, but thought I would throw that out). ~Michael -- 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.
Re: [appengine-java] Re: Weird performance problem last 3 days or so
In case it helps you I'll point out that my strategy of deploying the same code under a different appid continues to work, and this morning I switched the domain over to the other appid. This new deployment continues to be lightning fast. The appid I'm using is not new, but has never been used for this app before. I'll also re-emphasize that the new instance has no data in the persistent store, while the other one has a little data that it never uses (long story). -- 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.
Re: [appengine-java] does the Google AppEngine or WebToolkit replace the bootclasspath of the running Java runtime?
Do you have the contact information for the Apple Engineer? On Sat, Mar 12, 2011 at 3:38 AM, Shawn Brown big.coffee.lo...@gmail.comwrote: Hi, I used the open-jdk workaround to solve the problems introduced by the latest apple java sdk update but have a question an Apple engineer asked me about the following: http://code.google.com/p/googleappengine/issues/detail?id=4712 http://code.google.com/p/google-web-toolkit/issues/detail?id=6125 does the Google AppEngine or WebToolkit replace the bootclasspath of the running Java runtime? From the crash reports I've seen, we should only be failing in native in this way if a couple of new classes we introduced are not present. I'm not sure how to explain it, but since the problem appears to be isolated to these Google tools, I can only speculate that this is the work of JVM wizards who are somehow replacing our universe with their own. I don't think AE or GWT do that, do they? Shawn -- 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. -- 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.
