Release 4.0.18

Suppress message length log for in_hot_standby . (Tatsuo Ishii)

PostgreSQL 14 introduced new config parameter in_hot_standby .

The value is either "on" for standby servers or "off" for primary servers. As a result pgpool log is flooded by the messages:

     LOG:  reading message length
     DETAIL:  message length (22) in slot 1 does not match with slot 0(23)
    

To avoid this, only complain if the parameter name is not in_hot_standby .

Also the message is enhanced to show the parameter name. For example:

     LOG:  ParameterStatus "TimeZone": node 1 message length 30 is different from main node message length 24
    

Discussion: [pgpool-hackers: 4076]

Enhance parameter status handling. (Tatsuo Ishii)

When a parameter status message arrives from backend Pgpool-II forwards it to frontend not just memorize.

Fix long standing bug with pcp_node_info . (Tatsuo Ishii)

Discussion: [pgpool-hackers: 4109]

Fix health check process issues pointed out by Coverity . (Tatsuo Ishii)

Fix memory leak pointed out by Coverity . (Tatsuo Ishii)

Fix failover() to deal with the case when no former primary node exists. (Tatsuo Ishii)

In case Req_info->primary_node_id is -1 like no primary node exists when Pgpool-II starts up, failover() skipped to call find_primary_node_repeatedly() . Also follow_master_command was not executed.

Discussion: [pgpool-hackers: 4113]

Fixed the streaming replication check process not to retry if it cannot connect to the backend.( bug 742 ) (Bo Peng)

This retry caused a long time failover.

Fix documentation typos. (pengbo)

Patch is created by Umar Hayat.

Add "exclude" settings to /etc/yum.repos.d/pgdg-redhat-all.repo so that Pgpool-II is not installed from PostgreSQL YUM repository. (Bo Peng)

Add restriction regarding ParameterStatus and in_hot_standby parameter. (Tatsuo Ishii)

Add restriction about set_config . (Tatsuo Ishii)

Fix pgpool_setup in failover script creation. (Tatsuo Ishii)

When pgpool_setup creates failover.sh , it did not consider the case when no primary server existed.

Allow to run regression test against existing installation without recompiling. (Tatsuo Ishii)

Discussion: [pgpool-hackers: 4077]

Fix pgpool_setup and watchdog_setup binary PATH in noinstall mode. (Bo Peng)