tooptoop4 edited a comment on issue #10139:
URL: 
https://github.com/apache/incubator-superset/issues/10139#issuecomment-649086213


   I reckon there is no harm at polling every 0.1 seconds,  presto jdbc driver 
does that anyway (website says "Presto is an open source distributed SQL query 
engine for running **interactive** analytic queries"). I heard of the 3 second 
rule with keeping attention span (https://paceadv.com/the-3-second-rule/), if 
your query takes 3.5seconds you have a bit of disengagement but if its a snappy 
< 1.5 seconds stay hooked. If others concerned about increasing load on presto 
then perhaps allow these to be set in config of the data source?


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