Hadoop Terminology

• Hadoop Ecosystem: It consists of Hadoop core project(HDFS, MapReduce) and other open source projects (Hive, Pig, Imapala, Sqoop etc) working on top of Hadoop to help in data analysis
• PIG: High level language to  analyses large data set, internal it uses MR
• Hive: Offers a SQL like language on top of MR
• Imapala: develops as a way to query data in hadoop like SQL with out using MR, with low latency compare to Hive.
• Sqoop: To migrate data from RDBMS to Hadoop
• Flume:  To move data from external resource (logs etc) to Hadoop
• Hbase: real time db on hdfs
• Hue: GUI Frontend to cluster
• Oozie: workflow management
• Mahoot: Machine learning library