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In hadoop if i have 10000 files of 1 mb each then 10000 mappers will execute but if i have 100mb as my split size then still 10000 mappers will execute or 100 mappers will execute?

In hadoop if i have 10000 files of 1 mb each then 10000 mappers will execute but if i have 100mb as my split size then still 10000 mappers will execute or 100 mappers will execute?

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