If you go here: http://storm.apache.org/documentation/Understanding-the-parallelism-of-a-Storm-topology.html
In "How to change the parallelism of a running topology" is what you need. 2015-12-12 11:19 GMT-06:00 Renya nath N <[email protected]>: > Can u please share more information on topology rebalancing.. > > On Mon, Nov 30, 2015 at 7:51 PM, Bobby Evans <[email protected]> > wrote: > > > We don't currently support rewriting a topology while it is in flight. > > There are a few tunable parameters that you can modify while the topology > > is in flight using the rebalance command, but not a lot of them. We hope > to > > add more over time. If there are specific things you would like to > change > > dynamically please let us know. > > - Bobby > > > > > > On Wednesday, November 25, 2015 9:20 AM, Renya nath N < > > [email protected]> wrote: > > > > > > Thank you for the information > > > > On Wed, Nov 25, 2015 at 6:39 PM, Nathan Leung <[email protected]> wrote: > > > > > Obviously you cannot change what is in your jar file but if the bolt is > > > already compiled you can try flux to change how your topology is > linked. > > > http://storm.apache.org/documentation/flux.html > > > > > > On Wed, Nov 25, 2015 at 5:03 AM, Renya nath N <[email protected]> > > wrote: > > > > > > > Hi Ankur, > > > > > > > > Thank you for valuable reply, > > > > Actually I was doing a project on intelligent query placemenet > strategy > > > for > > > > real time analytics. Dynamic topology evolution is the main focus. Is > > it > > > > possible to dynamically tune a topology when new queries( in terms of > > > > bolts) submitted to the system? > > > > > > > > > > > > Thank you > > > > Renya Nath N > > > > > > > > On Wed, Nov 25, 2015 at 1:55 PM, Ankur Garg <[email protected]> > > > wrote: > > > > > > > > > Hi Renya, > > > > > > > > > > Can you be more elaborate what exactly are u looking for . > > > > > > > > > > Specifically , what is a query here . Are these queries independent > > of > > > > each > > > > > other ? Where are u getting/retrieving these queries from . > > > > > > > > > > Nevertheless , assuming multiple queries means simple > multiprocessing > > > ,I > > > > > think u r looking for parallelism hint while defining ur > topologies > > > like > > > > > > > > > > TopologyBuilder topicTopologyBuilder = new TopologyBuilder(); > > > > > > > > > > topicTopologyBuilder.setSpout("spoutName", new > > > TopicListenerSpout(), > > > > > 1); > > > > > topicTopologyBuilder.setBolt("boltName", new TopicMysqlBolt(), > 10 > > > > > ).shuffleGrouping("spoutName"); > > > > > > > > > > Third parameter is what will allow multiple instances/threads of > > Spouts > > > > and > > > > > Bolts . > > > > > > > > > > > > > > > > > > > > On Wed, Nov 25, 2015 at 1:16 PM, Renya nath N <[email protected] > > > > > > wrote: > > > > > > > > > > > Sir, > > > > > > > > > > > > How can I process multile queries in aache storm? > > > > > > Do I need to create separate topology for each query? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Thank you > > > > > > Renya Nath N > > > > > > > > > > > > > > > > > > > > > > > > > > > -- Rodrigo Valladares Cotta Master's Student, Computer Science University of Nebraska-Lincoln
