MapReduce is an algorithm for processing huge datasets on certain kinds of distributable problems using a large number of nodes
How I can get the name of the input file within a mapper? I have multiple input files stored in …
hadoop mapreduceI have the following hive query: select count(distinct id) as total from mytable; which automatically spawns: 1408 Mappers 1 Reducer I …
hadoop mapreduce hiveI wrote a mapreduce job to extract some info from a dataset. The dataset is users' rating about movies. The …
hadoop mapreduceI am passing input and output folders as parameters to mapreduce word count program from webpage. Getting below error: HTTP …
hadoop amazon-web-services amazon-s3 mapreduce hadoop2I have my own MapReduce code that I'm trying to run, but it just stays at Accepted state. I tried …
hadoop mapreduceWhere is the classpath for hadoop set? When I run the below command it gives me the classpath. Where is …
hadoop mapreduce hadoop2I ran a mapreduce job on hadoop-2.7.0 but mapreduce job can't be started and I faced with this bellow error: …
hadoop mapreduceIn Google's MapReduce paper, they have a backup task, I think it's the same thing with speculative task in Hadoop. …
hadoop mapreduce