pg_upgrade and epoch

Current pg_upgrade copy XID into new cluster, but not it epoch. Why?

Without epoch from old cluster txid_current() in upgraded database return

lower value than before upgrade. This break, for example, PgQ and it must

be fixed by hand after upgrade with pg_resetxlog.

PS: see http://lists.pgfoundry.org/pipermail/skytools-users/2014-April/001812.html

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Sergey Burladyan