brahmareddybattula commented on a change in pull request #63: Training-27: Hadoop Training Slides URL: https://github.com/apache/incubator-training/pull/63#discussion_r363566774
########## File path: content/Hadoop/src/main/asciidoc/index.adoc ########## @@ -0,0 +1,126 @@ +//// + + Licensed to the Apache Software Foundation (ASF) under one or more + contributor license agreements. See the NOTICE file distributed with + this work for additional information regarding copyright ownership. + The ASF licenses this file to You under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with + the License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +//// +:revealjs_progress: true +:revealjs_slidenumber: true +:sourcedir: ../java + +== What is Apache Hadoop? + +Apache Hadoop is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. + +Two main layers: + +- Processing layer (MapReduce) +- Storage layer (Hadoop Distributed File System) + +== MapReduce + +Hadoop MapReduce is a software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) in-parallel on large clusters (thousands of nodes) of commodity hardware in a reliable, fault-tolerant manner. + +The MapReduce framework consists of: + +- single master ResourceManager Review comment: This is for YARN, not for MR. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
