Matt Dew <mattd(at)consistentstate(dot)com> writes:
> I have a database that was shut down, cleanly, during an 'reindex
> table' command. When the database came back up, queries against that
> table started doing sequential scans instead of using the indexes as
> they had been up until that point.
What exactly is your definition of a "clean shutdown"? At the very
least you'd have had to abort the session running the reindex. Also,
what PG version is this, and what are the index definitions?
regards, tom lane