Stack Overflow
Stack Overflow

Questions tagged [topology]

Topology is the mathematical study of the properties that are preserved through deformations, twistings, and stretchings of objects. Tearing, however, is not allowed. A circle is topologically equivalent to an ellipse (into which it can be deformed by stretching) and a sphere is equivalent to an ellipsoid.

377 questions
0
votes
0 answers

Apache storm error when submitting topology locally

I'm trying to submit my Storm topology locally. However, I keep receiving this error on the console when calling cluster.submitTopology(): [Thread-5] ERROR backtype.storm.event - Error when processing event java.lang.IllegalStateException:…
andrew Patterson
  • 559
  • 2
  • 6
  • 19
0
votes
2 answers

Locate Computer in Network topology

I ask myself that for some days now, and couldn't find a clear answer. Imagine a network with several rooms, each room with it's own (Layer 2) Switch. Those are then connected in star topology to another switch which is then connected to the…
Christian
  • 609
  • 8
  • 22
0
votes
2 answers

Network topology in c/c++

I'm trying to define a network topology in C/C++ language. The goal is to parse it from C/C++ to XML and viceversa. In this topology (as you see in the picture) routers are connected with interfaces; each of them have an ip address and a link…
darkalbo
  • 323
  • 6
  • 17
0
votes
2 answers

Check if a PostGIS topology with a given name exists

How can I test if a PostGIS topology with a given name exists? I don't want to run into error when creating the topology with: SELECT topology.CreateTopology('topology_name', 1);
Sebastian Barth
  • 4,079
  • 7
  • 40
  • 59
0
votes
0 answers

Listing all bolts in Storm topology

When I build my topology and receive the StormTopology, I would like to be able to list all Spouts and Bolts that have been added. I use the get_bolts() (and get_spouts()) method, but from there it seems I cannot access the original Spout/Bolt…
Jannick
  • 2,094
  • 3
  • 17
  • 21
0
votes
1 answer

How to start building a topology for Storm?

I just installed storm-incubator in my Ubuntu 14.04. Now I can't get any related info to start off with building a topology and running it in Storm. Please can someone give me a step to step to what to do at this point? Like any clue to start off.
Trilok Tourani
  • 11
0
votes
1 answer

Word Topology deployment error

I am getting the following error when I try to deploy the Word Topology in windows. I have followed the below link to deploy the word Topology in windows. http://ptgoetz.github.io/blog/2013/12/18/running-apache-storm-on-windows/ When i deploy and…
bharathi
  • 6,019
  • 23
  • 90
  • 152
0
votes
1 answer

Convert Storm - wordCount topology to use a Kafka Spout

I'm new to Storm and Kafka, and I could manage to install both on a local virtual machine after some time. I currently have a working wordCount topology taking sentences from a dropBox text file: public void nextTuple() { final String APP_KEY =…
Zack S
  • 1,412
  • 1
  • 23
  • 37
0
votes
1 answer

R oce - How to apply read.topo or as.topo to .xyz file from ETOPO1

I really like the oce package and would like to use plot.topo to make a map of the coastline and bathymetry of Eastern Canada and Northeastern United States. I am trying to make a dataset like "topoMaritimes", which is available and covers much of…
user3780396
  • 1
0
votes
1 answer

Running Exclamation Topology failed

~/src/storm-0.8.1/bin/storm jar /root/src/storm-starter/target/storm-starter-0.0.1-SNAPSHOT-jar-with-dependencies.jar storm.starter.ExclamationTopology demo I tried to run this and it said that the problem is with the nimbus connection , but my…
Bilal
  • 122
  • 10
0
votes
1 answer

Possible bug with Z3: Z3 is not able to prove a theorem in Topology

I am trying to prove with Z3 the theorem in general topology given at TPTP-Topology I am translating the code given there using the following Z3-SMT-LIB code ;; File : TOP001-2 : TPTP v6.0.0. Released v1.0.0. ;; Domain : Topology ;; Problem …
Juan Ospina
  • 1,317
  • 1
  • 7
  • 15
0
votes
1 answer

Storm Exception : Pipe to subprocess seems to be broken

Hi I set up storm on a production server. Running supervisorctl status gives the following outpug storm_nimbus RUNNING pid 24955, uptime 15:51:16 storm_supervisor RUNNING pid 24953, uptime 15:51:16 storm_ui …
flexxxit
  • 2,440
  • 5
  • 42
  • 69
0
votes
1 answer

How to display label for bi-direct link/path/line in D3js force directed layout

I'm trying to draw a network topology using D3sj force directed layout. I did a basic topology with link and node. However, now i want to show the interface name for each link on each node as the following picture. Could you guys guide me how i can…
user3467117
  • 1
0
votes
1 answer

Finding point inside enclosed area

I have xy grid, where points have whole-numbered, positive coordinates. These points are "neighbours" if both their x and y coordinates differ by less than 2 - they are simply next to each other. In this grid, I have found path that encloses some…
user1687327
  • 176
  • 1
  • 9
0
votes
2 answers

Define a cube and three intervals in Prolog

I need to define a cube and three intervals Cx, Cy, and Cz as the projections of the cuboid on the x-, y-, and z-axes, respectively. I'm supposed to use the interval predicate interval_dur. The image on the link may more clear what i need…
Nil
  • 201
  • 3
  • 12
1 2 3
…
25 26