drill

c0d5a693 - DRILL-2762: Update Fragment state reporting and error collection

DRILL-2762: Update Fragment state reporting and error collection DeferredException - Add new throwAndClear operation on to allow checking for exceptions preClose in FragmentContext - Add new getAndClear operation BufferManager - Ensure close() can be called multiple times by clearing managed buffer list on close(). FragmentContext/FragmentExecutor - Update FragmentContext to have a preClose so that we can check closure state before doing final close. - Update so that there is only a single state maintained between FragmentContext and FragmentExecutor - Clean up FragmentExecutor run() method to better manage error states and have only single terminal point (avoiding multiple messages to Foreman). - Add new CANCELLATION_REQUESTED state for FragmentState. - Move all users of isCancelled or isFailed in main code to use shouldContinue() - Update receivingFragmentFinished message to not cancel fragment (only inform root operator of cancellation) WorkManager Updates - Add new afterExecute command to the WorkManager ExecutorService so that we get log entries if a thread leaks an exception. (Otherwise logs don't show these exceptions and they only go to standard out.) Profile Page - Update profile page to show last update and last progress. - Change durations to non-time presentation Foreman/QueryManager - Extract listenable interfaces into anonymous inner classes from body of Foreman QueryManager - Update QueryManager to track completed nodes rather than completed fragments using NodeTracker - Update DrillbitStatusListener to decrement expected completion messages on Nodes that have died to avoid query hang when a node dies FragmentData/MinorFragmentProfile - Add ability to track last status update as well as last time fragment made progress AbstractRecordBatch - Update awareness of current cancellation state to avoid cancellation delays Misc. Other changes - Move ByteCode optimization code to only record assembly and code as trace messages - Update SimpleRootExec to create fake ExecutorState to make existing tests work. - Update sort to exit prematurely in the case that the fragment was asked to cancel. - Add finals to all edited files. - Modify control handler and FragmentManager to directly support receivingFragmentFinished - Update receiver propagation message to avoid premature removal of fragment manager - Update UserException.Builder to log a message if we're creating a new UserException (ERROR for System, INFO otherwise). - Update Profile pages to use min and max instead of sorts.