purge_results with jobid crashing - looking for insight

[satra]

ipython 1.1.0 in anaconda on osx mavericks

i used to have the following line which appeared to work fine till recently:

client.purge_results(self.taskmap[taskid])

however, i'm getting the following error now:

AssertionError: Can't purge a client with outstanding tasks!

and i see the assertion statement that raises this. however i don't see any docs on what causes this error and how best to fix this.

my intent with this was to clear that specific job out of existence as far as ipython was concerned. i've retrieved the results, i don't want any aspect of the job to take up memory anywhere (i send thousands of jobs to the client and at least initially when we implemented this - the memory was increasing as more jobs ran).

[minrk]

The check seems to be a bit overzealous, I'll look into clearing up the logic.

[minrk]

Try #4722.