Andres Freund <andres@anarazel.de> writes:
> That's obviously to complicated for the release notes. Trying to make it more
> understandable I came up with the following, which still does not seem great:
> ...
How do you like this wording?
<para>
Fix corruption of HOT chains when a RECENTLY_DEAD tuple changes
state to fully DEAD during page pruning (Andres Freund)
</para>
<para>
It was possible for <command>VACUUM</command> to remove a
recently-dead tuple while leaving behind a redirect item that
pointed to it. When the tuple's item slot is later re-used by
some new tuple, that tuple would be seen as part of the
pre-existing HOT chain, creating a form of index corruption.
If this has happened, reindexing the table should repair the
damage. However, this is an extremely low-probability scenario,
so we do not recommend reindexing just on the chance that it might
have happened.
</para>
I'm also going to swap the order of this item and the TOAST locking
item, since that one is seeming like it's much more relevant to
most people.
regards, tom lane