Answer / Nitesh Kumar Gupta

Some ways to debug a MapReduce job include:
1. Logging: You can print logs from the map and reduce functions.
2. Job history server: It provides detailed information about completed jobs, including the number of mappers, reducers, status, and other details.
3. Debugging frameworks: Hadoop comes with a JVM-based debugger that allows you to debug MapReduce jobs in real-time.

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