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From Radar Lei <r...@pivotal.io>
Subject Re: error (connection pointer is NULL) when using hawq pxf
Date Fri, 11 May 2018 06:18:27 GMT
Hi Gang,

The log is not attached, please provide it again by the email or in jira.
Thanks.

Regards,
Radar

On Tue, May 8, 2018 at 4:24 PM, gang.wang <gang.wang@sky-data.cn> wrote:

> Hi,hawq team:
>
>
> I have met an error using hawq pxf.
>
>
> Here is my environment:
>
> 10.0.0.11,10.0.0.12,10.0.0.13 for hdfs
>
> 10.0.0.14,10.0.0.15,10.0.0.16 for hawq and pxf.
>
> centos 7.4
>
> hawq version:2.2.0
>
>
> I followed the example on ‘''https://cwiki.apache.org/
> confluence/display/HAWQ/PXF+Build+and+Install''’ for
>
> '''CREATE EXTERNAL TABLE pxf_hdfs_textsimple ...’''
>
>
> But,when I query the external table ,I got the error below:
>
>
> postgres=# select * from pxf_hdfs_textsimple;
>
> ERROR:  Error dispatching to seg0 skyaxe-computing-0.localdomain:40000:
> connection pointer is NULL
>
> DETAIL:
>
> Master unable to connect to seg0 skyaxe-computing-0.localdomain:40000:
> could not connect to server: Connection refused
>
> Is the server running on host "10.0.0.14" and accepting
>
> TCP/IP connections on port 40000?
>
>
> Mail attachments is pg_log.
>
>
> Thanks!
>
>
>
>

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