Every so often we get the following error from Impala: [HY000] [Cloudera][ThriftExtension] (11) Error occurred while contacting server: EAGAIN (timed out). The connection has been configured to use a binary mechanism for authentication. This error might occur if the server is not using a binary mechanism for authentication. (11) (SQLDriverConnect)   Our software makes up to 3 attempts to run the action, if the first (and second) attempts fail. The attempt fails on this error sometimes, but not always. This (the fact that the error occurs only some of the times) leads us to think that it is not a configuration issue, as suggested by the wording of the error.   1. What causes this error ? 2. How should we deal with this ? 3. Can we prevent the problem from happening ?   Thanks   Lior H. ... View more