我是如何解决jobtracker.info could only be replicated to 0 nodes, instead of 1这个问题的

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于 2017-03-03 11:03:45 发布

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我按照慕课网上的教程来学习搭建hadoop-1.2.1环境，可是在start-all.sh这步的时候一直通不过，命令行报如下错误

[@soguo /home/denglinjie/hadoop]# start-all.sh 
Warning: $HADOOP_HOME is deprecated.

starting namenode, logging to /home/denglinjie/hadoop-1.2.1/logs/hadoop-denglinjie-namenode-bjzw_30_4.out
localhost: ssh_exchange_identification: Connection closed by remote host
localhost: ssh_exchange_identification: Connection closed by remote host
starting jobtracker, logging to /home/denglinjie/hadoop-1.2.1/logs/hadoop-denglinjie-jobtracker-bjzw_30_4.out
localhost: ssh_exchange_identification: Connection closed by remote host

日志文件报如下错误：

2017-03-02 19:28:00,951 WARN org.apache.hadoop.hdfs.DFSClient: Error Recov

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