hadoop fs -ls 上的连接被拒绝

Question

我一直在遵循一些关于设置 vagrant 单节点集群的说明，并且已经顺利通过了一次说明。但是，在尝试重复相同的指令时，我运行遇到了几个问题。现在我在尝试运行 hadoop fs -ls /

时遇到连接被拒绝的情况

$ hadoop fs -ls /
Warning: $HADOOP_HOME is deprecated.

15/01/18 04:09:21 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:22 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:23 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:24 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:25 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:26 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:27 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:28 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 7 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:29 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 8 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
15/01/18 04:09:30 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
ls: Call to localhost/127.0.0.1:54310 failed on connection exception: java.net.ConnectException: Connection refused

当我运行 jps 我得到以下信息：

$jps
4176 JobTracker
4313 TaskTracker
3970 DataNode
4581 Jps
4094 SecondaryNameNode

我真的不知道我错过了什么导致了这种不同的行为。任何帮助将不胜感激。

Answer 1

看起来你的名称节点没有启动。确保你格式化 namenode

停止集群并停止所有守护进程
格式化名称节点

格式化后，尝试先启动 namenode 和其他守护进程。

Answer 2

通过查看守护进程运行没有名称节点。我建议您继续并重新启动所有守护进程。下面是重启守护进程的命令，名称节点将启动并且运行。希望这对您有所帮助！

sudo service hadoop-master stop
sudo service hadoop-master start
hadoop dfsadmin -safemode leave
sudo jps

hadoop fs -ls 上的连接被拒绝

Connection refused on hadoop fs -ls

hadoop

vagrant