hadoop遇到的问题: org.apache.hadoop.ipc.Client: Retrying connect to server异常的解决
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今天在用pig脚本在hadoop运行时,出现如下错误:
前提:hadoop能正常启动,pig的参数也正常配置好了,
但是运行脚本就出现org.apache.hadoop.ipc.Client: Retrying connect to server异常,尝试了十来次,就停止了运行
分析问题:
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。
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