On 22.06.2011 06:05, Robert Haas wrote:
Second, when inserting, updating, or deleting
a tuple, we can no longer get away with clearing the visibility map
bit after releasing the lock on the corresponding heap page, because
an intervening crash might leave the visibility map bit set and the
page-level bit clear.

heap_update seems to still do that.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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