I know there is a StatusThread in WorkManager that sends statistics for all running queries every 5 seconds
On Sat, May 9, 2015 at 11:36 AM, Daniel Barclay <[email protected]> wrote: > In investigating the problem where sometimes canceling a query that > returns a lot of data causes all subsequent queries to hang in SQLLine, > I notice (from tailing logs) that there is RPC activity every 5 seconds > or so (while the subsequent query is hung in SQLLine inside the JDBC > client-side code waiting for query-results messages). > > It's not clear yet whether the server is slowly sending data to the client > because things are throttled, or I'm seeing some other communication. > (Some code mention fragment statuses, so maybe I'm seeing internal > communication.) > > Does throttling have a minimum speed? Does it send a message every > 5 seconds when fully throttled? > > > Does the 5-second interval ring any other bells (re which > communication it is)? > > > Thanks, > Daniel > -- > Daniel Barclay > MapR Technologies > -- Abdelhakim Deneche Software Engineer <http://www.mapr.com/> Now Available - Free Hadoop On-Demand Training <http://www.mapr.com/training?utm_source=Email&utm_medium=Signature&utm_campaign=Free%20available>
