=?utf-8?B?5p2O5rW36b6Z?= <hailong...@qunar.com> writes:
> I have a PostgreSQL datadir named /export/pg94beta1_data/ which was 
> initialized with PostgreSQL 9.4beta1,
> [ and 9.4beta2 won't start with it ]

This is expected; you need to initdb.  Or use pg_upgrade to upgrade
the cluster.  We had to change pg_control format post-beta1.

                        regards, tom lane


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