When Impala eventually supports writing to a table (like hive can do), will
it be necessary to run impala refresh to update the metadata?
We are wondering because we might want to write to a cached table, but we
do not want to have to so a lot of asynchronous refreshes. It would be nice
if impala could automatically update its own metadata without an explicit
refresh if it is the one doing the write. I realize this question is a bit
speculative since the write feature does not exist yet, but the answer
could influence things we are trying to design now.