ES 1.0.0 hangs intermittently on /_nodes/transport

We are trying to use elasticsearch-hadoop with our existing elastic search
cluster on 1.0.0. We are noticing that while running queries from Hive
(using ESStorageHandler), we are getting connection time out exception
while waiting on /_nodes/transport. The same happens intermittently when we
try to wget on /_nodes/transport. I checked the elastic search logs and
there are no errors. Any clues why this could be happening?

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