What is the role of a combiner in the MapReduce framework for data transformation?
- Data Sorting
- Intermediate Data Compression
- Parallelization
- Partial Aggregation
The role of a combiner in the MapReduce framework is partial aggregation. It performs a local reduction of data on each mapper node before sending it to the reducer. This reduces the volume of data transferred over the network and improves the efficiency of the data transformation process.
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