[pgpool-committers: 1591] pgpool: Fix primary node detection logic.

[Tatsuo Ishii]

Fix primary node detection logic.

There's a possibility that primary node is not detected. This happens
in following situation.  node 0: primary, node 1: standby. Node 0 goes
down. Health checking detects the fact but local status is not updated
yet. Primary node finding (find_primary_node) runs. Node 0's status is
yet healthy. Because find_primary_node fails to connect to node 0, it
immediately returns -1 and fails to find that fact that node 1 is now
primary.

Fix is just continuing to look for primary node when fails to connect
to a node.

Per [pgpool-general: 2409].

Branch
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V3_1_STABLE

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=d793f110ff4298f107db937ecbd6dcd19b8b0a3d

Modified Files
--------------
main.c |    9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)