Top "Hadoop3" questions

Use for questions specific to Apache Hadoop 3.0 features (i.e. Erasure Coding, YARN Timeline Service v2, Opportunistic Containers, 3+ NameNode fault-tolerance).

HDFS_NAMENODE_USER, HDFS_DATANODE_USER & HDFS_SECONDARYNAMENODE_USER not defined

I am new to hadoop. I'm trying to install hadoop in my laptop in Pseudo-Distributed mode. I am running it …

hadoop hadoop3
Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAppMaster

Contents of mapred-site.xml : <configuration> <property> <name>mapreduce.framework.name</name> <…

java hadoop hadoop3
Hadoop Error starting ResourceManager and NodeManager

I'm trying to setup Hadoop3-alpha3 with a Single Node Cluster (Psuedo-distributed) and using the apache guide to do so. …

java hadoop resourcemanager hadoop3