LogManager is the tutorial class to illustrate the basic
DataStore API usage. The LogManager class is used
to parse the web server logs in combined log format, store the
data in a Gora compatible data store, query and manipulate the stored data.
In the data model, keys are the line numbers in the log file,
and the values are Pageview objects, generated from
gora-tutorial/src/main/avro/pageview.json.
See the tutorial.html file in docs or go to the
web sitefor more information.