PyHive client is slower compared to Presto python client while querying Presto

[sandeshh]

PyHive client needs at least 2 seconds minimum. But presto python client can be much faster than that. Seen less than 1 seconds also.

https://prestosql.slack.com/archives/CFLB9AMBN/p1592593788123400

[tooptoop4]

PyHive/pyhive/presto.py

Lines 106 to 107 in 8eb0aea

	:param poll_interval: int -- how often to ask the Presto REST interface for a progress
	update, defaults to a second

PyHive/pyhive/common.py

Line 48 in 8eb0aea

time.sleep(self._poll_interval)

[sandeshh]

poll_interval = 0.2 works fine, so comment needs to be updated.

[tooptoop4]

what comment?

[sandeshh]

param poll_interval: int

poll_interval -> should be float.