Apache Hadoop

  1. MapReduce Programming Model
    1. MapReduce Fundamentals
      1. Programming Paradigm
        1. Divide and Conquer Approach
          1. Functional Programming Concepts
          2. Core MapReduce Functions
            1. Map Function
              1. Input Processing
                1. Key-Value Pair Generation
                  1. Parallel Execution
                  2. Reduce Function
                    1. Data Aggregation
                      1. Result Summarization
                        1. Sequential Processing
                        2. Key-Value Pair Concept
                          1. Data Representation
                            1. Serialization Requirements
                              1. Custom Data Types
                            2. MapReduce Data Flow
                              1. Input Phase
                                1. InputFormat Role
                                  1. InputSplit Creation
                                    1. Record Reading
                                    2. Map Phase
                                      1. Mapper Execution
                                        1. Intermediate Output Generation
                                          1. Local Storage
                                          2. Shuffle and Sort Phase
                                            1. Data Partitioning
                                              1. Key-Based Sorting
                                                1. Data Transfer
                                                  1. Merge Operations
                                                  2. Reduce Phase
                                                    1. Reducer Execution
                                                      1. Final Output Generation
                                                        1. Result Writing
                                                        2. Output Phase
                                                          1. OutputFormat Role
                                                            1. Result Storage
                                                          2. MapReduce Job Components
                                                            1. Driver Program
                                                              1. Job Configuration
                                                                1. Input/Output Specification
                                                                  1. Job Submission
                                                                  2. Mapper Implementation
                                                                    1. Map Method Override
                                                                      1. Setup and Cleanup
                                                                        1. Context Usage
                                                                        2. Reducer Implementation
                                                                          1. Reduce Method Override
                                                                            1. Setup and Cleanup
                                                                              1. Context Usage
                                                                              2. Combiner Function
                                                                                1. Local Aggregation
                                                                                  1. Network Traffic Reduction
                                                                                    1. Implementation Considerations
                                                                                  2. MapReduce Programming
                                                                                    1. Word Count Example
                                                                                      1. Problem Definition
                                                                                        1. Mapper Logic
                                                                                          1. Reducer Logic
                                                                                            1. Driver Configuration
                                                                                            2. Job Packaging and Execution
                                                                                              1. Code Compilation
                                                                                                1. JAR File Creation
                                                                                                  1. Job Submission
                                                                                                    1. Monitoring Execution
                                                                                                  2. MapReduce Limitations
                                                                                                    1. Batch Processing Nature
                                                                                                      1. High Latency
                                                                                                        1. Programming Complexity
                                                                                                          1. Iterative Processing Challenges
                                                                                                            1. Real-Time Processing Limitations

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                                                                                                          4. Yet Another Resource Negotiator (YARN)

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                                                                                                          6. Hadoop Ecosystem Tools