apache/tajo — pull request #99 by jinossy (2014-07-31 07:22:36+00:00)
Title: TAJO-985: Client API should be async

The query status synchronization on state machine always wait for time (event processing time) before status changes. If a lot of time are being processed to the event dispatcher, client api(getStatus, getProgress) will be waiting for changed event status. and query will be session timed out.