[pgpool-committers: 4080] pgpool: Fix Pgpool-II hang when used by erlang applications.

[Tatsuo Ishii]

Fix Pgpool-II hang when used by erlang applications.

Erlang client sends "Describe" message followed by "Flush".  So the
backend returns "Row description." However Pgpool-II forgets to reset
the query in progress flag upon receiving "Row description" message,
then Pgpool-II keeps on waiting for response from backend. This is the
cause of erlang client hanging.

Fix is, just reset the query in progress flag upon receiving "Row
description" message. Same thing can be said to "no data" message.

Discussion: [pgpool-general: 5555]
http://www.pgpool.net/pipermail/pgpool-general/2017-June/005613.html

Branch
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V3_5_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=378111d4ac63ed8910c6d08189b33775fcb0c0b1

Modified Files
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src/protocol/pool_proto_modules.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)