Running the topology

We have a few more small items to address before we run the topology:

1. Copy the logconfig.ini file from the second example in Chapter 3, Introducing Petrel, to this topology's directory.
2. Create a file called setup.sh. Petrel will package this script with the topology and run it at startup. This script installs the third-party Python libraries used by the topology. The file looks like this:

   pip install -U pip
   pip install nltk==3.0.1 oauthlib==0.7.2 tweepy==3.2.0

3. Create a file called manifest.txt with these two lines:

   logconfig.ini
   setup.sh

4. Before running the topology, let's review the list of files that we've created. Make sure you have created these files correctly:
   • topology.yaml
   • twitterstream.py
   • splitsentence.py
   • rollingcount.py
   • intermediaterankings.py
   • totalrankings.py
   • manifest.txt
   • setup.sh
5. Run the topology with this command:

   petrel submit --config topology.yaml --logdir `pwd`

Once the topology starts running, open another terminal in the topology directory. Enter the...