MapReduce is an algorithm for processing huge datasets on certain kinds of distributable problems using a large number of nodes
How to decide when to use a Map-Side Join or Reduce-Side while writing an MR code in java?
hadoop mapreduce hadoop-streamingI have an associative array $assoc, and need to reduce to it to a string, in this context $OUT = "<…
php mapreduce associative-arrayI'm very much new to MapReduce and I completed a Hadoop word-count example. In that example it produces unsorted file (…
hadoop mapreduce word-count parallel-processingWhat are the real world use cases on using map reduce job queues i.e. the value of mapred.job.…
hadoop mapreduce cloudera hortonworks-data-platformI'd like to use your wisdom for picking up the right solution for a data-warehouse system. Here are some details …
database mapreduce data-warehouse greenplum vldbW.r.t to one of the java projects, we recently started using SonarLint. Output of the code analysis shows …
java algorithm mapreduce refactoring sonarlintI am writing hadoop programs , and i really dont want to play with deprecated classes . Anywhere online i am not …
hadoop mapreduce clouderaI'm trying to learn to use DataFrames and DataSets more in addition to RDDs. For an RDD, I know I …
scala apache-spark mapreduceIs the aggregation framework introduced in mongodb 2.2, has any special performance improvements over map/reduce? If yes, why and how …
performance mongodb mapreduce aggregation-framework