The java program in eclipse cannot access the hdfs file system and reports: what should Connection Refused do?

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Phenomenon: after starting hadoop in pseudo-distributed mode, the java program on eclipse cannot access the hdfs file system, report: Connection Refused

Analysis:

The hadoop server and client code are no longer on the same machine. Telnet 192.168.222.128 9000 does not work on the client machine, telnet 127.0.0.1 9000 is fine on the server, but telnet 192.168.222.128 9000 does not work, so it is no wonder that the server cannot be accessed on client. Later, I thought that the value of fs.defaultFS configured in core-site.xml is hdfs://localhost:9000. I think it may have something to do with this. Then change to the hostname hadoop (there is 192.168.222.128 hadoop in / etc/hosts), restart the hdfs service, and then use the client to access it.

The above is the java program in eclipse shared by Xiaobian cannot access the hdfs file system and report: what should Connection Refused do? if you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.