Yes, the limit is 5:
http://code.google.com/appengine/docs/python/datastore/transactions.html#What_Can_Be_Done_In_a_Transaction
On Mon, Mar 8, 2010 at 4:10 AM, JD <liva...@gmail.com> wrote:
> I am enqueuing tasks within a transaction.
>
>
> tx.begin()
>
> for (int i=0;i<10;i++) {
> Queue queue = QueueFactory.getDefaultQueue();
> TaskOptions task = url("/taskurl");
> task.param("param", "value");
> queue.add(task);
> }
> tx.commit();
>
>
> I constantly get TransactionalTaskException when enqueuing task number
> #6 (everything until number 5 goes through without issues).
>
> Is there a limit on the number of tasks which can be enqueued within a
> transaction ?
>
>
> com.google.appengine.api.labs.taskqueue.TransactionalTaskException
> at
>
> com.google.appengine.api.labs.taskqueue.QueueApiHelper.translateError(QueueApiHelper.java:
> 50)
> at
>
> com.google.appengine.api.labs.taskqueue.QueueApiHelper.makeSyncCall(QueueApiHelper.java:
> 32)
> at
> com.google.appengine.api.labs.taskqueue.QueueImpl.add(QueueImpl.java:
> 241)
> at
> com.google.appengine.api.labs.taskqueue.QueueImpl.add(QueueImpl.java:
> 231)
>
> Caused by: java.lang.IllegalArgumentException:
> at
>
> com.google.appengine.api.datastore.DatastoreApiHelper.translateError(DatastoreApiHelper.java:
> 33)
> at
>
> com.google.appengine.api.labs.taskqueue.QueueApiHelper.translateError(QueueApiHelper.java:
> 51)
> ... 51 more
>
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