Release 3.2.19

Release Date: 2017-03-17

A.157.1. Bug fixes

  • Fix pcp_promote_node bug that fails promoting node 0. (Yugo Nagata)

    The master node could not be promoted by pcp_promote_node with the following error;

         FATAL: invalid pgpool mode for process recovery request
         DETAIL: specified node is already primary node, can't promote node id 0
        

    In streaming replication mode, there is a case that Pgpool-II regards the status of primary node as "standby" for some reasons, for example, when pg_ctl promote is executed manually during Pgpool-II is running, in which case, it seems to Pgpool-II that the primary node doesn't exist.

    This status mismatch should be fixed by pcp_promote_node, but when the node is the master node (the first alive node), it fails as mentioned above.

    The reason is as following. before changing the status, pcp_promote_node checks if the specified node is already primary or not by comparing the node id with PRIMARY_NODE_ID. However, if the primary doesn't exist from Pgpool-II's view, PRIMARY_NODE_ID is set to 0, which is same as MASTER_NODE_ID. Hence, when the master node is specified to be promoted, pcp_promote_node is confused that this node is already primary and doesn't have to be promoted, and it exits with the error.

    To fix this, pcp_promote_node should check the node id by using REAL_PRIMARY_NODE_ID, which is set -1 when the primary doesn't exist, rather than PRIMARY_NODE_ID.

  • Add the latest release note link to README file.(Bo Peng)

  • Fix to release shared memory segments when Pgpool-II exits. ( bug 272 ) (Tatsuo Ishii)

  • Remove pool_log/pool_error calls from signal handlers. (Tatsuo Ishii)

    See [pgpool-hackers: 1950] for details.

  • Fix for 0000249: watchdog sometimes fails de-escalation. ( bug 249 ) (Muhammad Usama)

    The solution is to use the waitpid() system call without WNOHANG option.

  • Fix connection_life_time broken by authentication_timeout. (Yugo Nagata)

  • Fix authentication timeout that can occur right after client connections. (Yugo Nagata)