Twitter Analytics Example¶
An application that collects Tweets and logs the top 10 hashtags used in the last minute.
In order to utilize the TweetCollector flowlet, which pulls a small sample stream via the Twitter API, an API key and Access token must be configured. Follow the steps at Twitter oauth access tokens to obtain these credentials. These configurations must be provided as runtime arguments to the Flow prior to starting it in order to use the TweetCollector flowlet.
Flow Runtime Arguments¶
When starting the Application from the command line, runtime arguments may need to be specified.
The required Twitter authorization properties (oauth-properties), as described in Twitter Configuration above, include all of these:
Build the Application jar:
mvn clean package
To start the Flow in the Standalone Runtime of Tigon (substituting for version and oauth-properties):
$ ./run_standalone.sh /path/to/TwitterAnalytics-<version>.jar co.cask.tigon.analytics.TwitterAnalytics [ oauth-properties ]
To start the Flow in the Distributed Runtime of Tigon (substituting for version and oauth-properties):
$ ./run_distributed.sh <ZookeeperQuorum> <HDFSNamespace> > START /path/to/TwitterAnalytics-<version>.jar co.cask.tigon.analytics.TwitterAnalytics [ oauth-properties ]
The top ten hashtags used in the previous minute get recorded. In the case of standalone instance of Tigon, the results will appear immediately in the Tigon command line interface; in the case of distributed instance of Tigon, the results will be written to the logs of the YARN container of the Flowlet.
License and Trademarks¶
Copyright © 2014 Cask Data, Inc.
Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.