[pgpool-committers: 6234] pgpool: Fix signal unblock leak in failover.

[Tatsuo Ishii]

Fix signal unblock leak in failover.

When failover event occurs, register_node_operation_request() gets
called to en-queue failover/failback requests. If the request queue is
full, this function returns false with unlocking semaphore. But it
forgot to unblock signal mask. This leads to block all signals
including SITERM, which makes pgpool fail to shutdown.

Discussion: https://www.pgpool.net/pipermail/pgpool-hackers/2019-October/003449.html

Branch
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V3_7_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=209f3c20b2329487975ef3c411ecfc67924b08d0

Modified Files
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src/main/pgpool_main.c | 1 +
1 file changed, 1 insertion(+)