Hi R.RAMPRASAD I'm sorry I can not see the image you post. PS: It seems that the questions are more suitable to be discussed in storm-user mail list. Can we transfer to [email protected]?
On Sat, Feb 22, 2014 at 5:03 PM, Ramprasad Ranganathan <[email protected]>wrote: > Hi,Kang Xiao > > Thank you. From your answer I understood, After submitting topology > to Nimbus node it does only distributing code and other management > works.Then the spouts and bolts are distributed evenly to worker nodes. I > have some other questions, > > - If I have only 3 machines,how 1 spout and 3 bolts will distributed > to nodes? > - Storm is for real time processing, If all data in the queue is > processed, spouts and bolts will go to "Waiting" state or what will happen? > - In following Image, If 3 bolts are distributed to each 3 nodes and > processing parallel,how Bolt 2 will process without the result of Bolt 1? > is it go to waiting state to receive bolt 1 result tuple? > - Bolts process tuples synchronously or asynchronously? If 1 million > tuples emitted by spout, each tuple process one by one? > - If 2 tuples emitted by spout,1st bolt on node 1 process and send to > 2nd bolt on Bolt. Same way tuple 2 process on 1 bolt on 1 node and send to > 2 bolt on 2 node. Is my understanding is correct or not? > > [image: Inline image 1] > > > > On Sat, Feb 22, 2014 at 1:21 PM, Kang Xiao <[email protected]> wrote: > >> Hi R.RAMPRASAD >> >> I try to answer your questions and hope that will help you. >> >> > 1. I have a topology(1 spout and 3 bolts) and 3 machines(1 nimbus and 2 >> > worker nodes).Whether I want to run my topology on all 3 nodes or run on >> > nimbus is enough? Is it nimbus will take care of distributing the code >> to >> > other nodes? >> > >> >> Just submit your topology to nimbus and nimbus will take care of >> distributing the code to worker nodes. >> >> > >> > 2. My spout will run on nimbus or any of the worker nodes? >> >> Spouts and Bolts will all run on worker nodes. >> >> > >> > 3. The 3 bolts are run on 3 separate nodes or run on same node? is it >> will >> > take care by nimbus? >> >> Spouts and Bolts will run in workers. Workers will distribute evenly on >> worker nodes. If you specify enough workers eg. 4 workers in your case, >> they will run on separate nodes. >> >> > >> > 4. How do we track processing of bolt in nodes? >> Storm UI keep track of tuple emit/ack/fail count of spout/bolt. For more >> detail information you can turn on topology debug mode and worker will log >> every tuple. >> >> > >> > 5. Is it any documentation available to understand the complete flow of >> > processing a message in Storm? >> >> >> Your can refer to the storm documentation site: >> http://storm.incubator.apache.org/documentation/Implementation-docs.html >> >> >> -- >> Best Regards! >> >> 肖康(Kang Xiao,<[email protected] (mailto:[email protected])>) >> >> Distributed Software Engineer >> >> 在 2014年2月22日 星期六，14:51，Ramprasad Ranganathan 写道： >> > Hi, >> > >> > I am beginner in Storm.I am trying to understand the processing flow of >> > storm by following questions. >> > >> > 1. I have a topology(1 spout and 3 bolts) and 3 machines(1 nimbus and 2 >> > worker nodes).Whether I want to run my topology on all 3 nodes or run on >> > nimbus is enough? Is it nimbus will take care of distributing the code >> to >> > other nodes? >> > >> > 2. My spout will run on nimbus or any of the worker nodes? >> > >> > 3. The 3 bolts are run on 3 separate nodes or run on same node? is it >> will >> > take care by nimbus? >> > >> > 4. How do we track processing of bolt in nodes? >> > >> > 5. Is it any documentation available to understand the complete flow of >> > processing a message in Storm? >> > >> > -- >> > by >> > >> > *R.RAMPRASAD* >> >> > > > -- > by > > *R.RAMPRASAD* > -- Best Regards! 肖康(Kang Xiao,<[email protected]>) Distributed Software Engineer
