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From Sailesh Mukil <>
Subject Re: Problem in Querying data on Impala Cluster
Date Wed, 25 Apr 2018 06:29:11 GMT
Hi Geetika,

It looks like you're using unencrypted connections that don't fall under
the local subnet or a private network, which means you're potentially
trying to send unencrypted data over a public network between nodes.

We explicitly disallow these kinds of connections by default. However, if
you still feel like you want to go ahead with this configuration, or that
the above explanation is a mistake, this might help you:

You can set the 'trusted_subnet' startup flag to whitelist the subnet that
your impala nodes' IP addresses fall under.

I hope this helps.

- Sailesh

On Tue, Apr 24, 2018 at 11:12 PM, Geetika Gupta <>

> Hello Community,
> We were trying to query parquet data stored in hdfs through impala
> cluster. but when we execute our query it shows the following error in the
> *impalad* logs of the machine:
> *W0424 18:32:40.928611  7655] Unauthorized connection
> attempt: Server connection negotiation failed: server connection from
> <node_ip_of_different_machine>:43448: unencrypted connections from publicly
> routable IPs are prohibited. See --trusted_subnets flag for more
> information.: <node_ip_of_different_machine>:43448*
> We are encountering this problem only when we have multiple nodes in
> impala. It works fine on single machine.
> --
> Regards,
> Geetika Gupta

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