Illegal argument erros when fetching a object from datastore with primay key

[Kesava Neeli]

Hi,

We are using HR datastore for our data needs for our application. We had some promotions in our app which resulted in a big spike of requests. There were 25-30 req/sec and all requests were accessing datastore. We also use memcache as needed. All our datasore reads/writes failed with no clue on the exceptions.

A simple read from datastore caused this exception. The application was down for couple of hours because of these errors. This seem to happen under load. Can anyone in appengine team what's the issue here? Says illegal argument and invalid handle.

LogUtils error: Error in getting data from datastore
javax.jdo.JDOFatalUserException: Illegal argument
        at org.datanucleus.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:344)
        at org.datanucleus.jdo.JDOPersistenceManager.getObjectById(JDOPersistenceManager.java:1676)
        at org.datanucleus.jdo.JDOPersistenceManager.getObjectById(JDOPersistenceManager.java:1767)
        at org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManager.getObjectById(DatastoreJDOPersistenceManager.java:73)

NestedThrowablesStackTrace:
java.lang.IllegalArgumentException: invalid handle: 14104995113016828271
        at com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:33)
        at com.google.appengine.api.datastore.DatastoreApiHelper$1.convertException(DatastoreApiHelper.java:70)
        at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:94)
        at com.google.appengine.api.datastore.FutureHelper$CumulativeAggregateFuture.get(FutureHelper.java:142)
        at com.google.appengine.api.datastore.FutureHelper$TxnAwareFuture.get(FutureHelper.java:218)
        at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:86)
        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$1.runInternal(DatastoreServiceImpl.java:68)
        at com.google.appengine.api.datastore.DatastoreServiceImpl$1.runInternal(DatastoreServiceImpl.java:65)
        at com.google.appengine.api.datastore.TransactionRunner.runInTransaction(TransactionRunner.java:29)
        at com.google.appengine.api.datastore.DatastoreServiceImpl.get(DatastoreServiceImpl.java:65)
        at com.google.appengine.api.datastore.DatastoreServiceImpl.get(DatastoreServiceImpl.java:55)
        at org.datanucleus.store.appengine.RuntimeExceptionWrappingDatastoreService.get(RuntimeExceptionWrappingDatastoreService.java:56)

[Takashi Matsuo]

Hi Kesava,

Can you file an issue on our issue tracker with full stack-trace, the date and time of occurrence, your app-id, etc?

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