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time out mechanism for QO/QE

Hello,

since QE is keeping information in memory for each query, it's desirable
to get rid of "dead" queries. How about having the QO ping the QE
every now and then. If a query has been idle for a certain time, then
QE could delete it and abort() it. An alternative would be to swap it
to disk.

?

 - Henrik
_________________________________________
Henrik Nordberg       <hnordberg@lbl.gov>
Scientific Data Management Research Group
Lawrence Berkeley National Laboratory