hadoop
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记录:hadoop 2.5.2 集群动态增加新datanode 无法通信的问题
1、拷贝NameNode上的hadoop home 目录到新的datanode（包括配置文件等）。2、启动新的datanode hadoop-daemon.sh start datanodedatanode 与 namenode通信成功，成功创建数据目录。[hadoop@laodeng2 current]$ ls -ltotal 8drwx------ 4 hadoop hadoop 4096 Dec 2...
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Steps To Setup Hadoop 2.4.0 (Single Node Cluster) on CentOS/RHEL
Step 1. Install JAVA/JDKJava is the primary requirement for running hadoop on any system, So make sure you have java installed on your system using following command.# java -version java version "1.8.0_05"Java(TM) SE Runtime Environment (build 1.8.0_05-b13)Java HotSpot(TM) Client VM (bui...
