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Error to integrate Impala with Kudu

By Dinesh

Create Table Failed
W0106 18:18:54.640544 368440 negotiation.cc:307] Unauthorized connection attempt: Server connection negotiation failed: server connection from 172.136.38.157:35678: unauthenticated connections from publicly routable IPs are prohibited. See --trusted_subnets flag for more information.: 172.136.38.157:35678
After setting up kudu, we can enable it to work with Impala.

We, can check the cluster status -
kudu cluster ksck <master>

The cluster doesn't have any matching tables
==================
Errors:
==================
error fetching info from tablet servers: Not found: No tablet servers found

FAILED

--
Also, tablet Server UI is not opening.

Solution- 

This error might be because Kudu Service has to know about trusted networks, which we can set -

Kudu Service Advanced Configuration Snippet (Safety Valve) for gflagfile Kudu (Service-Wide)

--trusted_subnets=127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,169.254.0.0/16,172.136.38.0/24,X.X.X.0/24

Bounce the Kudu service -

refer - https://community.cloudera.com/t5/Support-Questions/Tablet-servers-failed-to-heartbeat-to-master-of-Kudu-1-4-0/td-p/57587

Verification- 
Execute following commands from Impala -


CREATE TABLE `my_first_table` ( `id` BIGINT PRIMARY KEY, `name` STRING ) PARTITION BY HASH(id) PARTITIONS 2  STORED AS KUDU TBLPROPERTIES ('kudu.num_tablet_replicas' = '1'); 

insert into my_first_table  select 2 id , 'Ganesh' name from invoice_headers limit 1;

select * from my_first_table;

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