[pgpool-committers: 7901] pgpool: Fix client side hang when describe message is followed by NoDat

[Tatsuo Ishii]

Fix client side hang when describe message is followed by NoData response.

For certain describe request for a query including "LISTEN", NoData
message can be returned. Since Pgpool-II buffered NoData, clients
could hang waiting for the NoData message in vain. To fix this, do not
buffer NoData message.

Problem reported and patch provided by Daniel van de Giessen.
Discussion: https://www.pgpool.net/pipermail/pgpool-hackers/2021-July/003951.html

Branch
------
V4_1_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=79ace397ec0e9999625e571ae607fa4e4d68d2b5

Modified Files
--------------
src/protocol/pool_process_query.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)