title: State "Waiting for table flush" in processlist
body: <p>If I try to run queries (even as easy as select id from table limit 1 ) on some specific tables in a schema (only a few of them have this problem) I get stuck.
  When looking at the processlist, the state is "Waiting for table flush".
  Any suggestion about how do I unlock these tables so that I can query them?</p>