I understood that giraph-dist-1.2.0-hadoop2-bin.tar.gz binary distribution is built with following maven comand and it is officially supported by with hadoop-2.5.1.
"mvn -Phadoop_2 clean install" I succesfully used giraph-dist-1.2.0-hadoop2-bin.tar.gz in pseudo distribute mode on hadoop-2.5.1 (in which I configured yarn). Now, I downloaded giraph-dist-1.2.0-hadoop2-src.tar.gz and succesfully build giraph with yarn support, using comand and patches taken from https://stackoverflow.com/questions/33728752/building-giraph-with-hadoop, i.e.: "mvn -Phadoop_yarn -Dhadoop.version=2.5.1 clean package -DskipTests" I din't understand if and what I have to change in hadoop 2.5.1 configuration about mapred-site.xml and yarn-site.xml in order to use giraph with yarn support? I think that the main question is: What changes in hadoop usage by giraph built with -Phadoop_2 and by giraph built with -Phadoop_yarn? The only documentation that I found is the following one: - Apache Hadoop 2 (latest version: 2.5.1) This is the latest version of Hadoop 2 (supporting YARN in addition to MapReduce) Giraph could use. You may tell maven to use this version with "mvn -Phadoop_2 <goals>". -- Francesco Sclano
