[Postgres-xc-bugs] pgxc_ctl forget reload datanode master config file when starting pgxc

[zhou l. <zh...@gm...>]

Hi All,
Datanode streaming replication state is async after pgxc_ctl command
init all or start all。Datanode master sync_state is async in
pg_stat_replication，as fallows ：
postgres=#  select * from pg_stat_replication;
 pid  | usesysid | usename | application_name |  client_addr   |
client_hostname | client_port |         backend_start         |
state   | sent_location | write_location | flush_location |
replay_location | sync_priority | sync_state
------+----------+---------+------------------+----------------+-----------------+-------------+-------------------------------+-----------+---------------+----------------+----------------+-----------------+---------------+------------
 2772 |       10 | postgres  | datanode2        | 192.168.34.162 |
            |       51715 | 2014-08-20 04:35:39.561691+08 | streaming
| 0/30011E8     | 0/30011E8      | 0/30011E8      | 0/30011B8       |
           0 | async
(1 row)
postgres=# show synchronous_standby_names;
 synchronous_standby_names
---------------------------
(1 row)

behavior of pgxc_ctl ：
1、when stoping datanode slave，prepare_stopDatanodeSlave() set the
master to asynchronous mode by changing datanode master parameters
synchronous_standby_names='', then reload master postgresql.conf if
the master is running
2、when starting datanode slave,prepare_startDatanodeSlave() change
master parameters  synchronous_standby_names='datanode name' , but it
forget reload the master postgresql.conf, so the
synchronous_standby_names is invalid, replication is always
asynchronous, is it a bug of pgxc_ctl ?


-- 
Thanks
Zhou Liang