I suspect you've touched upon a subtle bug involving the translation
of Java anonymous inner-classes and JavaScript garbage collection.
There is a subtle co-dependency between the anonymous Timer and the
anonymous AsyncCallback inner-classes that may be preventing the
garbage collector from collecting those classes -- which are created
"on the stack" of their respective methods.
I suggest simply skirting the issue by combining the two classes like
so, into a private inner-class (note I did not syntax check this):
private class CheckJob extends Timer implements AsyncCallback<Job> {
private int checkJobRetries = 0;
@Override
public void run() {
if (++checkJobRetries < SOME_LIMIT) {
checkJobSvc.checkJob(currJobId, this);
}
else {
// give up
}
}
public void onFailure(Throwable caught) {
this.schedule(TIMER_INTERVAL);
}
public void onSuccess(Job job) {
if (job.hasFinished()) {
// blah, blah, blah...
return;
}
updateProgress(job);
this.schedule(TIMER_INTERVAL);
}
}
On the submit click, create a CheckJob instance and schedule it:
CheckJob cj = new CheckJob();
cj.schedule(TIMER_INTERVAL);
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