[ https://issues.apache.org/jira/browse/HAWQ-982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ruilong Huo updated HAWQ-982: ----------------------------- Summary: PL/Python function with psycopg2 cannot connect to remote postgres (was: PL/Python with psycopg2 cannot connect to remote postgres) > PL/Python function with psycopg2 cannot connect to remote postgres > ------------------------------------------------------------------ > > Key: HAWQ-982 > URL: https://issues.apache.org/jira/browse/HAWQ-982 > Project: Apache HAWQ > Issue Type: Bug > Components: Core > Reporter: Lei Chang > Assignee: Ruilong Huo > Fix For: backlog > > > For one use case I want to connect to external postgreSQL database from HAWQ > PL/Python procedure. > I use python psycopg2 library. > Remote postgreSQL server reject connecion from HAWQ with > this error : FATAL unsupported frontend protocol 28675.0: server supports > 1.0 to 3.0. > The same python code is running well from OS level. > I wonder if it is HAWQ or PostgreSQL PL/Python interpreter related issiue. > Any help or pointers would be great. > ----------------------- > my code below: > CREATE OR REPLACE FUNCTION dchoma.connection_test( ) RETURNS text AS > $$ > import psycopg2 > try: > conn = psycopg2.connect("dbname='database_name' user='user' > host='remote_host' password='pass' port=5432") > return "Connection successful " > except Exception , msg : > return "Exception: {m}".format(m=msg) > $$ > LANGUAGE 'plpythonu' VOLATILE; > select * from dchoma.connection_test(); > HAWQ version 2.0.1.0 build dev ( compiled from github) > Remote database version: PostgreSQL 9.2.15 on x86_64-redhat-linux-gnu, > compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-4), 64-bit > OS: CentOS 7-1511 > i found similar issiue here, but the problem is not solved. > https://discuss.zendesk.com/hc/en-us/community/posts/200793368-greenplum-dblink-postgresql-remote-is-error -- This message was sent by Atlassian JIRA (v6.3.4#6332)