What does this mean?

WARNING: Rel pg_class: TID 17/13: InsertTransactionInProgress 106004881 -
can't shrink relation

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"Ed L." <pgsql (AT) bluepolka (DOT) net> writes:
It's harmless. In 7.4 it's been downgraded to a NOTICE, and I wonder if
we shouldn't push it lower yet.

regards, tom lane

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