[jira] [Created] (HAWQ-989) PL/Python function with psycopg2 cannot connect to hawq itself

["Ruilong Huo (JIRA)" <ji...@apache.org>]

Ruilong Huo created HAWQ-989:
--------------------------------

             Summary: PL/Python function with psycopg2 cannot connect to hawq itself
                 Key: HAWQ-989
                 URL: https://issues.apache.org/jira/browse/HAWQ-989
             Project: Apache HAWQ
          Issue Type: Bug
          Components: Core
            Reporter: Ruilong Huo
            Assignee: Lei Chang


For one use case I want to connect to hawq itself from hawq PL/Python function using python psycopg2 library to retrieve some information. However, it errors with "authentication failed for user "gpadmin": invalid authentication method"

{noformat}
DROP FUNCTION IF EXISTS connection_test();
DROP FUNCTION

CREATE OR REPLACE FUNCTION connection_test( ) RETURNS text AS
$$
import psycopg2

try:
    conn = psycopg2.connect("dbname='gptest' user='gpadmin' host='localhost' port=5433")
    return "Connection successful "
except Exception , msg :
    return "Exception: {m}".format(m=msg)
$$
LANGUAGE 'plpythonu' VOLATILE;
CREATE FUNCTION

SELECT * FROM connection_test();
                                      connection_test
--------------------------------------------------------------------------------------------
 Exception: FATAL:  authentication failed for user "gpadmin": invalid authentication method

(1 row)
{noformat}



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