Thread: pgsql: pg_upgrade: have pg_upgrade fail for old 9.4 JSONB format

pg_upgrade:  have pg_upgrade fail for old 9.4 JSONB format

Backpatch through 9.4

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/35419aeb8356e3d6973816846cb6ca64a0f736bf

Modified Files
--------------
contrib/pg_upgrade/check.c      |   94 +++++++++++++++++++++++++++++++++++++++
contrib/pg_upgrade/pg_upgrade.h |    5 +++
2 files changed, 99 insertions(+)