Hi Ravi,
You should name your tasks. If one fails and retries for some
reason, or runs multiple times, then the tasks will start to fan-out
(think fork-bomb).
http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/taskqueue/TaskOptions.html#taskName(java.lang.String)
To control the delay you can set a countdown or eta. Note that the
time you specify is like a request, I've not seen tasks run before
than time, but tasks will sometimes run later than requested.
http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/taskqueue/TaskOptions.html#countdownMillis(long)
Robert
On Sat, Apr 30, 2011 at 02:13, Ravi Sharma <[email protected]> wrote:
> Hi ,
> I have a chained task which runs every 1 second(Still wondering how can i
> run it every 3 seconds)
> Task code is something like this
> try{
> //Do something
> //read data store and update datastore
> }catch(Throwable ex){
> logger.log(Level.Sever,ex.getMessage(),ex);
> }finally{
> //add next task to queue to be run next
> Queue queue = QueueFactory.getQueue("queuename");
>
> queue.add(TaskOptions.Builder.withUrl("/tasks/mytask/"+auctionId).method(Method.GET));
> }
>
> Now i expect that one task will be finished and next will be added to the
> queue. 2 days back i found 4-5 tasks in the queue i dont know how they got
> there
>
> and today i found tasks queue empty. How it can be possible that queue can
> get more then 1 task at a time or it can get empty.I still have quota left
> for the day.
>
> My App Name is edurectory
>
>
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