postgres-xc-developers Mailing List for Postgres-XC

Hi all,

pgxc_node_name is used in postgresql.conf for XC for a node to identify
itself.
Now that node DDL is in place, I was wondering if it could be possible to
remove that from the GUC list and add it in pgxc_node.
There is however some side-effect if this is done.
Now pgxc_node_name is used at postmaster startup to register the node on
GTM. However, node registration has been added 1 year and a half ago
(already) to keep a track of nodes connecting to the cluster.
But now that nodes are managed through catalogs, it doesn't look that much
useful.

Adding the node-self identification will require a new column in pgxc_node,
let's say called node_isself, using a boolean value.
And CREATE/ALTER NODE will be extended with a keyword SELF to identify a
node self. This new keyword is applicable on all nodes.
Ex: CREATE NODE coord WITH ( [SELF | NOT SELF ] )
ALTER NODE coord SET [ SELF | NOT SELF ];

pros:
- remaining connection parameters in postgresql.conf file are GTM-related
- consistency in node management

cons:
- node registration has to be removed

Any opinions on that?
-- 
Michael Paquier
http://michael.otacoo.com