Map Reduce

This section contains the documents that would help you in understanding MapReduce and Advance MapReduce concepts such as Counters, Schedulers, Custom Writables, Compression, Serialization, Tuning, Error Handling, and how to deal with complex MapReduce programs.

Images for sequence file mapreduce program
Dear Learner, I hope you are doing good. In the seqinput.txt file you need to give the path of the images files uploaded in H...
Wed, 6 Jul, 2016 at 12:32 PM
MR Issue
Solution 1: From the error, it seems that you forgot to mark the main class while creating jar. Make sure that you m...
Wed, 6 Jul, 2016 at 12:31 PM
MR - Sequencefileformat
Dear Prakhar, Hope you are doing well. Please accept our sincerely apology for delay in response. Hadoop framwork can...
Wed, 6 Jul, 2016 at 12:28 PM
MR Question
Dear Sandeep, Hope you are doing well. Please find below the solution related to your query. Q.3.You observe that the...
Wed, 6 Jul, 2016 at 12:27 PM
INFO fs.TrashPolicyDefault: Namenode trash configuration
Dear Arshad, We hope you are  doing good. You might be receiving this error as the parameters HADOOP_CMD, HADOOP_STREAMING ar...
Wed, 6 Jul, 2016 at 12:18 PM
Executing Counters program
Dear Saranya, I hope you are doing good. You might be receiving this error as the mapreduce code of Counter is in Hadoop-2.X ...
Wed, 6 Jul, 2016 at 12:04 PM