What is the function of a Combiner in the MapReduce process?
- Data Compression
- Intermediate Data Filtering
- Result Aggregation
- Task Synchronization
The function of a Combiner in MapReduce is result aggregation. It combines (or aggregates) the intermediate output generated by the Mapper before sending it to the Reducer. This helps in reducing the volume of data transferred over the network and improves overall processing efficiency.
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