hadoop异常的相关内容

文章 2022-02-15 来自：开发者社区

【Hadoop Summit Tokyo 2016】使用基于Lambda架构的Spark的近实时的网络异常检测和流量分析

本讲义出自Pankaj Rastogi与Debasish Das在Hadoop Summit Tokyo 2016上的演讲，主要分享了网络数据相关知识、网络异常DDoS攻击以及使用基于Lambda架构的Spark的近实时的网络异常检测和流量分析的架构设计，并分享了Trapezium的相关概念。

文章 2022-02-15 来自：开发者社区

org.apache.hadoop.ipc.Client: Retrying connect to server异常的解决

检查发现是DataNode一直连接不到NameNode。检查各个节点在etc/hosts中的配置是否有127.0.1.1 xxxxxx。如果有把其屏蔽或者删除，重启各节点即可。原因：127.0.1.1是debian中的本地回环。这个造成了hadoop解析出现问题。这个设置应该是在做伪分布式的hadoop集群的时候，留下来的。如果照上面的方法还是出现同样的问题，或者etc/hosts目录...

文章 2022-02-15 来自：开发者社区

org.apache.hadoop.hbase.MasterNotRunningException: Retried 7 times 异常的解决

在使用HBase Shell的时候出现错误: ERROR: org.apache.hadoop.hbase.MasterNotRunningException: Retried 7 times 查看一下logs： FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception. Starting shutdown. org...

问答 2022-02-15 来自：开发者社区

阿里云搭建hadoop chd，shell操作正常，使用java api操作出现异常。报错

" 1、自己是初学hadoop，第一次使用hadoop-2.6.0-cdh5.7.0在阿里云上面进行部署。基础的jdk环境没有问题。因为只有一台服务器，搭建的是伪分布式，修改的配置文件如下：core-site.xml fs.defaultFS hdfs://desktop1:8020 hadoop.tmp.dir /root/tmp hdfs-site.xml dfs....

问答 2021-12-05 来自：开发者社区

Hadoop 中配合Hadoop的环境变量，如果没有配置可能会抛异常显示是什么呢？

文章 2018-03-23 来自：开发者社区

hadoop_异常_02_ExitCodeException exitCode=1: chmod: changing permissions of `/ray/hadoop/dfs/data': Operation not permitted

一、异常现象启动hadoop时，datanode启动失败，出现如下异常： 2018-03-23 14:39:09,962 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Invalid dfs.datanode.data.dir /ray/hadoop/dfs/data : ExitCodeException exitCode=1...

文章 2018-03-21 来自：开发者社区

hadoop_异常_01_ Unable to determine address of the host-falling back to "localhost" address java.net.UnknownHostException: rayner

一、异常现象安装好hadoop之后，执行格式化namenode命令时，抛出以下异常： 18/03/21 21:02:10 WARN net.DNS: Unable to determine local hostname -falling back to "localhost" java.net.UnknownHostException: rayner: rayner at j...

文章 2017-11-12 来自：开发者社区

Hadoop的NameNode无法启动异常

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问答 2017-11-08 来自：开发者社区

用java代码上传文件到hadoop报异常，并且上传了一个0b的文件

我刚开始学大数据，用虚拟机写了hadoop集群，后来在阿里云上租了区同分区的服务器也搭了hadoop集群，可以正常运行，并且在公网访问页面。但是学习到用java代码上传文件到hadoop时出现了问题。 java代码如下： public static void main(String[] args) throws Exception { Configuration conf = new ...

文章 2016-11-05 来自：开发者社区

CentOS6上Hadoop集群中服务器cpu sys态异常的定位与解决

问题现象在zabbix系统中，对Hadoop集群的历史监控数据分析时，发现在执行大Job任务时，某些服务节点的cpu sys态很高；具体以hadoop_A服务节点为例，在10:15-10:40这个时间段，cpu user态为60%，而sys态则高达35%；对于整个Hadoop集群，并不是所有的节点都会出现sys过高的问题，产生此类问题的都是部署CentOS...

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