E.41.1. Migration to version 7.4.10

A dump/restore is not required for those running 7.4.X. However, if you are upgrading from a version earlier than 7.4.8, see the release notes for 7.4.8.

E.41.2. Changes

• Fix race condition in transaction log management

  There was a narrow window in which an I/O operation could be initiated for the wrong page, leading to an Assert failure or data corruption.

• Prevent failure if client sends Bind protocol message when current transaction is already aborted

• /contrib/ltree fixes (Teodor)

• AIX and HPUX compile fixes (Tom)

• Fix longstanding planning error for outer joins

  This bug sometimes caused a bogus error "RIGHT JOIN is only supported with merge-joinable join conditions".

• Prevent core dump in pg_autovacuum when a table has been dropped