For the benefit of community, Please feel free to add/request anything that hasnt been covered. Please remember this is beginners guide and not a expert level documentation.
/Flume: contains notes and examples of apache flume
/Hive: contains notes and examples of apache hive
/MySQL: code sample containing peices to create db, create table and load data in mysql
/Sqoop: contains notes and examples of import/export using sqoop
/spark: contains notes,documentation, sample example(s) of spark APIs
/exam: sample cca-175 exam questions and solutions (in solution branch)
/problem1- complex data structure handling using hive. (exposure to Hive,create table,LOAD,named_struct,struct)
/problem2- Stock data analysis. (exposure to : json file handing, SparkSQL,map,reduce,filter,join,groupByKey,keyBy,UDFs etc)
/problem3- MovieLens database analysis
/problem4- Lahman's baseball database analysis
/problem5- Hortonworks certification sample. Total 10 tasks .
/Tweeter- Tweeter data analysis
/problem6- Retail database sample excercises