记录一下历时四天的Hadoop改错历程!
本人hadoop使用的版本是hadoop-3.1.3的高可用(HA)
目录
问题描述:
从错节点jps查看进程显示正常,DataNode和NodeManager都存在的,
但是运行程序的时候会报奇奇怪怪的错误,下面是会报的错误:

错误一:
ERROR tool.ExportTool: Encountered IOException running export job: java.net.ConnectException: Call From hadoop01/192.168.17.128 to hadoop01:8020 failed on connection exception: java.net.ConnectException: Connection refused;
错误二:
Permission denied: user=dr.who, access=READ_EXECUTE, inode="/tmp/hadoop-yarn/staging/root/.staging":root:supergroup:drwx------
错误三:
Caused by: org.apache.hadoop.hdfs.BlockMissingException: Could not obtain block: BP-865521925-192.1

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