CODEWITHSUNDEEP
hadoopvagrant
RockyMountainHigh
RockyMountainHigh

Reputation: 3021

Connection refused on hadoop fs -ls

I have been following some instructions on setting-up a vagrant single-node cluster and have been through the instrustions once without issue. However, I am running into several problems when trying to repeat the same instructions. Now I am getting a connection refused when trying to run hadoop fs -ls /

$ 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

When I run jps I get the following:

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

I'm really at a loss as to what I have missed to cause this different behavior. Any help would be greatly appreciated.

Upvotes: 1

Views: 809

Answers (2)

221B
221B

Reputation: 851

By looking at the daemons running there is no name node. I would suggest you go ahead and restart all the daemons. Below are the commands which just restart the daemons and name node will be up and running. Hope this helps!

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

Upvotes: 1

Asm
Asm

Reputation: 26

Looks like your namenode is not up. Make sure u format the namenode

  • stop the cluster and stop all daemons
  • format the namenode

Once you format, try starting namenode first and other daemons.

Upvotes: 1

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