CODEWITHSUNDEEP
javahadoopmapreduce
Vultan
Vultan

Reputation: 449

Where is the API documentation for Mapper.Context in Hadoop?

I'm having fun coming up to speed with Hadoop, which includes checking out t

https://hadoop.apache.org/docs/current/api/

The documentation for the class Mapper makes extensive reference to the class Mapper.Context (org.apache.hadoop.mapreduce.Mapper.Context). However, I can't see to find API documentation for that Mapper.Context class/interface/whatever it is except in old versions of the API. Where in the current API would I find documentation for Mapper.Context in particular? I see it being used in various places (context.write method, most commonly), but I can't find current documentation for those methods, despite having spent some time searching.

Upvotes: 4

Views: 1050

Answers (1)

TayTay
TayTay

Reputation: 7170

There's not a lot of specific documentation it would seem. It would appear the reason for this is that the Mapper.Context class is merely an internal abstract class that implements the interface MapContext and nothing else. See line 106 in the source code. Since MapContext extends TaskInputOutputContext, that's probably the best place to look for good information.

Upvotes: 4

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