Distributed Cache is an important feature provided by map reduce framework. When you want to share some files across all nodes in Hadoop Cluster, DistributedCache is used. The files could be an executable jar files or simple properties file.
Basically distributed cache allows you to cache ...READ MORE
A Zero reducer as the name suggests ...READ MORE
MapReduce is an algorithm used to store ...READ MORE
Job job = new Job(conf,"job_name") is just used ...READ MORE
We use distributed cache to share those ...READ MORE
Firstly you need to understand the concept ...READ MORE
org.apache.hadoop.mapred is the Old API
org.apache.hadoop.mapreduce is the ...READ MORE
put <localSrc> <dest>
copyFr ...READ MORE
Differences are as follows:
Hadoop's MR can be ...READ MORE
Doc on Hadoop Streaming : http://hadoop.apache.org/docs/r1.2.1/streaming.html
Hadoop streaming is ...READ MORE
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