hadoop常见错误的相关内容

文章 2022-09-20 来自：开发者社区

Hadoop常见错误及解决方案、Permission denied: user=dr.who, access=WRITE, inode=“/“:summer:supergroup:drwxr-xr-x

@[toc]4.常见错误及解决方案1）防火墙没关闭、或者没有启动YARNINFO client.RMProxy: Connecting to ResourceManager at hadoop108/192.168.10.108:80322）主机名称配置错误3）IP地址配置错误4）ssh没有配置好5）root用户和summer两个用户启动集群不统一6）配置文件修改不细心7）不识别主机名称java....

文章 2018-02-03 来自：开发者社区

hadoop初学者MapReduce常见错误

image.png 主机与ip地址的映射，不可以出错配置完后hostname一下 image.png core-site.xml 正确配置 <configuration> <property> <name>fs.defaultFS</name> <value>hdfs://hadoop-senior.beifeng.co...

文章 2017-11-01 来自：开发者社区

Hadoop常见错误及处理方法

1、Hadoop-root-datanode-master.log 中有如下错误： ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in 导致datanode启动不了。原因:每次namenode format...

文章 2017-08-01 来自：开发者社区

Hadoop常见错误和处理方式

常见问题及处理 mysql版本，必须是MYSQL5.1。查询办法mysqladmin version 在建立hive数据库的时候，最好是:create database hive; oozie的数据库，同样：create database oozie; hadoop采集的字符集问题。修改/etc/sysconfig/i18n 更改字符集为en_US.UTF-8 重启机器生效。重启机器的指令....

文章 2017-06-10 来自：开发者社区

hadoop-HA集群搭建，启动DataNode，检测启动状态，执行HDFS命令，启动YARN，HDFS权限配置，C++客户端编程，常见错误

本篇博文为整理网络上Hadoop-HA搭建后出来的博客，参考网址为：http://blog.chinaunix.net/uid-196700-id-5751309.html 3. 部署 3.1. 机器列表共5台机器（zookeeper部署在这5台机器上），部署如下表所示： NameNode JournalNode DataNode ZooKeeper 192.168.106....

文章 2017-05-29 来自：开发者社区

Hadoop-2.8.0集群搭建、hadoop源码编译和安装、host配置、ssh免密登录、hadoop配置文件中的参数配置参数总结、hadoop集群测试,安装过程中的常见错误

25. 集群搭建 25.1 HADOOP集群搭建 25.1.1集群简介 HADOOP集群具体来说包含两个集群：HDFS集群和YARN集群，两者逻辑上分离，但物理上常在一起 HDFS集群：负责海量数据的存储，集群中的角色主要有NameNode / DataNode YARN集群：负责海量数据运算时的资源调度，集群中的角色主要有 ResourceManager /NodeManager...

文章 2016-12-14 来自：开发者社区

Hadoop - Mac OSX下配置和启动hadoop以及常见错误解决

0. 安装JDK 参考网上教程在OSX下安装jdk 1. 下载及安装hadoop a) 下载地址: http://hadoop.apache.org b) 配置ssh环境在terminal里面输入: ssh localhost 如果有错误提示信息，表示当前用户没有权限。这个多半是系统为安全考虑，默认设置的。更改设置如下：进入system preferenc...

文章 2016-02-27 来自：开发者社区

Hadoop常见错误2

问题1：在程序的日志中看到，在reduce阶段出现了异常：Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out ，程序里需要打开文件，系统默认为1024，也可以通过ulimit -a查看编辑文件/etc/security/limits.conf 在文件后面添加： # End of file * soft ...

文章 2016-02-26 来自：开发者社区

Hadoop常见错误1

1 关于 Warning: $HADOOP_HOME is deprecated. 　　hadoop 1.0.0版本，安装完之后敲入hadoop命令时，老是提示这个警告： Warning: $HADOOP_HOME is deprecated. 　　经查hadoop-1.0.0/bin/hadoop脚本和"hadoop-config.sh"脚本，发现脚本中对HADOO...

文章 2016-02-24 来自：开发者社区

hadoop 集群常见错误解决办法

hadoop 集群常见错误解决办法：（一）启动hadoop集群时易出现的错误： 1. 错误现象：java.net.NoRouteToHostException: No route to host. 原因：master服务器上的防火墙没有关闭。解决方法: 在master上关闭防火墙: chkconfi...

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