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摘要： 环境：centos6.4 64位1、禁用selinux（所有节点)、关闭防火墙（所有节点必须做） 禁用selinux：$vim /etc/sysconfig/selinux将其中属性SELINUX修改为：SELINUX=disabled 关闭防火墙：$service iptables stop ... 阅读全文

摘要： 环境centos6.41、搭建可以匿名访问的ftp2、将系统镜像提取到ftp ftp://192.168.20.100/CentOS_6.4_Final3、备份repo mkdir /etc/yum.repos.d/bak mv /etc/yum.repos.d/*.repo /etc/yum... 阅读全文

摘要： 环境：centos6.4参考资料：http://blog.csdn.net/wildin/article/details/5878186http://wiki.ubuntu.org.cn/Vsftpd#.2Fetc.2Fvsftpd.conf1、保证yum源可用，运行命令： yum -y inst... 阅读全文

摘要： 环境： 阅读全文

摘要： 原文地址：http://blog.csdn.net/xanxus46/article/details/22325253环境：mac os x 10.9.2python版本：2.7.5easy_install对于Python相当于apt之于Ubuntu，安装其他库十分方便，但是最近安装PIL(Pyth... 阅读全文

摘要： mapreduce.jobhistory.address 0.0.0.0:10020 MapReduce JobHistory Server IPC host:port注释：历史作业ipc的ip端口。 mapreduce.jobhistory.webapp.address 0.0.0.0:19888 MapReduce JobHistory Server Web UI host:port注释：历史作业的web端访问ip地址 mapreduce.jobhistory.keytab Location of the kerberos keytab file for the ... 阅读全文

摘要： mapreduce.job.end-notification.url http://localhost:8080/jobstatus.php?jobId=$jobId&jobStatus=$jobStatus--> Indicates url which will be called on completion of job to inform end status of job. User can give at most 2 variables with URI : $jobId and $jobStatus. ... 阅读全文

摘要： mapreduce.job.counters.limit 120 Limit on the number of user counters allowed per job. 注释： mapreduce.framework.name local The runtime framework for executing MapReduce jobs. Can be one of local, classic or yarn. 注释： yarn.app.mapreduce.am.staging-dir /tmp/hadoop-yarn/staging The staging d... 阅读全文

摘要： mapreduce.tasktracker.healthchecker.script.path Absolute path to the script which is periodicallyrun by the node health monitoring service to determine if the node is healthy or not. If the value of this key is empty or the file does not exist in the location configured here, the node health... 阅读全文

摘要： mapreduce.jobtracker.taskcache.levels 2 This is the max level of the task cache. For example, if the level is 2, the tasks cached are at the host level and at the rack level. 注释： mapreduce.job.queuename default Queue to which a job is submitted. This must match one of the queues d... 阅读全文