I have quite simple model: public class PhraseMeta: { public 开发者_运维百科int Id { get; set; }
I am w开发者_C百科riting an indexing app for MapReduce. I was able to split inputs with NLineInputFormat, and now I\'ve got few hundred mappers in my app. However, only 2/mashine of those are active a
I\'m trying to set the number of map tasks to run in hadoop 0.20 environment. I am using the old api. Here are the options I\'ve tried so far:
I can\'t figure out what I\'m doing wrong here. I\'m using pymongo and have the following map/reduce code (all attributes of the document are directly accessible - i.e. no embedded parts relevant here
I have documents like this: { \"_id\" : \"someid\", \"name\" : \"somename\", \"action\" : \"do something\",
How to set up couchDb to perform SignUp and LogIn? Creating special database just for that, or giving evry document username and password. The goal is to retrieve custom document ba开发者_如何学编程se
I am trying to speed optimize MapReduce job. Is there any way I can tell hadoop to use a particular number of mapper/reducer processes? Or, at least, minimal number of mapper processes?
I am trying to understand what is the benefit of MapReduce, I have just read some introductions on it for the first time.
I\'ve been playing around with Scala, trying to get SMR to compile in Scala IDE with 2.9.1.SMR seems to have gone untouched since 2008-ish, and there are a lot of unresolved compile errors.The one tha
In all samples I\'ve seen so far, mapreduce apps take text files as input and write text as output. I\'d like my app to 开发者_开发知识库read objects from the binary file and write objects back to ou
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