What mechanism does Hadoop use to ensure that data processing continues even if a node fails during a MapReduce job?
- Data Replication
- Fault Tolerance
- Speculative Execution
- Task Redundancy
Hadoop uses Speculative Execution to ensure that data processing continues even if a node fails during a MapReduce job. The framework identifies slow-running tasks and launches backup tasks on other nodes, ensuring timely completion of the job.
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