运行 时候爆出这个错 Exception in thread "main" java.io.IOException: java.net.ConnectException: Call From hadoop.slave01/192.168.121.133 to 0.0.0.0:10020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:…

[root@qa bin]# hadoop fs -ls / Warning: $HADOOP_HOME is deprecated. 14/07/29 13:25:35 INFO ipc.Client: Retrying connect to server: centhost.centdomain/10.110.30.30:9000. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(max…

// :: INFO ipc.Client: Retrying connect to server: master/. Already tried , sleepTime= SECONDS) // :: INFO ipc.Client: Retrying connect to server: master/. Already tried , sleepTime= SECONDS) // :: INFO ipc.Client: Retrying connect to server: master/…

hadoop使用bin/start_all.sh命令之后,使用jps发现datanode无法启动 This problem comes when Datanode daemon on the system does not start.check the started daemons using "jps" command. If it in not started,start Datanode daemon manually by using the command:bin/had…

1.检查namenode服务器的是否运行正常,我的问题是没有开启hadoop集群出现的. 2.检查namenode服务器的防火墙是否开放的响应端口,一般内网建议关闭.…

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目录并没有127.0.1.1的设置的话. 那么可以在conf/core-site.xml (0.19.2版本的…

这个问题导致jps查看结点进程时发现找不到NodeManager或一段时间后消失,网上查找了很多博客,因hadoop版本不一样且出错的原因也可能不同,所以找了老半天. 步骤:jps --> 看logs中.log文件 --> 百度. 最后找到一个版本的博客提供的方法解决了我的问题:防火墙未关闭.http://itindex.net/detail/51063-hadoop 但是centos7版本的防火墙查看与关闭又找了老半天,还是多看linux本身的帮助与平时多看书为好. 相关命令: 1. 如何查…

14/03/26 23:10:04 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:10020. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)14/03/26 23:10:05 INFO ipc.Client: Retrying…

INFO ipc.Client: Retrying connect to server: hadoop/192.168.73.100:9000. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS) INFO ipc.Client: Retrying connect to server: hadoop/192.168.73.1…

  在Hadoop分布式模式部署完毕后,通过start-dfs.sh启动NameNode.DataNode.SecondaryNameNode,在master节点通过jps命令查看,看到NameNode.SecondaryNameNode已启动,在slave节点通过jps命令查看,DataNode也已经启动.(此时颇为欣喜,首次全然分布式部署即成功,可是...) 1 发现问题   准备好WordCount測试用例所需文件,通过hadoop fs -put file /命令上传文件,发现竟然报错,…