"hey i didnot get it,
wat you actually looking for is that code what you need ???
"
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Query related to Hadoop's map-reduce
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Scenario:I have one subset of database and one dataware house. I have bring this both things on HDFS. I want to analyse the result based on subset and datawarehouse. (In short, for one record in…Continue
Started this discussion. Last reply by Vikas Srivastava Jan 28.
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Bhavesh Shah commented on Bhavesh Shah's blog post Query related Hadoop's Map-reduce"Hello Jason,
I have tried in the same way but it is taking more time to process....."
Jason Venner commented on Bhavesh Shah's blog post Query related Hadoop's Map-reduce"If I understand you, you have to data sets, A & B, and for each record of A, you have to operate on every record of B.
The simplest way would be to use A as the input data set for your map reduce job, and to open and scan through B be in side…"
Bhavesh Shah posted a blog postQuery related Hadoop's Map-reduce
Scenario:I have one subset of database and one dataware house. I have bring this both things on HDFS. I want to analyse the result based on subset and datawarehouse. (In short, for one record in subset I have to scan each and every record in dataware house).Question:I want to do this task using Map-Reduce algo. I am not getting that how to take both files as a input in mapper and also how to handle both files in map phase of map-reduce. Pls suggest me some idea so that I can able to perform it?See More
Bhavesh Shah posted a discussionQuery related to Hadoop's map-reduce
Scenario:I have one subset of database and one dataware house. I have bring this both things on HDFS. I want to analyse the result based on subset and datawarehouse. (In short, for one record in subset I have to scan each and every record in dataware house).Question:I want to do this task using Map-Reduce algo. I am not getting that how to take both files as a input in mapper and also how to handle both files in map phase of map-reduce.Pls suggest me some idea so that I can able to perform it?See More
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Bhavesh Shah's Blog
Query related Hadoop's Map-reduce
Scenario:
I have one subset of database and one dataware house. I have bring this both things on HDFS. I want to analyse the result based on subset and datawarehouse. (In short, for one record in subset I have to scan each and every record in dataware house).
Question:
I want to do this task using Map-Reduce algo. I am not getting that how to take both files as a input in mapper and also how to handle both files in map phase of map-reduce. Pls suggest me some idea so…
ContinuePosted on January 3, 2012 at 12:35am — 2 Comments
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