CODEWITHSUNDEEP
hadoop2
rsl
rsl

Reputation: 27

Hadoop: Data node not started, Logs show "Java bind exception (port in use)"

Data node service is not started on one of my Hadoop cluster.

Data node logs has the following information...

Exception details on PC where datanode service is not started:

2015-08-12 15:51:09,331 INFO org.apache.hadoop.http.HttpServer2: HttpServer.start() threw a non Bind IOException java.net.BindException: Port in use: localhost:0 at org.apache.hadoop.http.HttpServer2.openListeners(HttpServer2.java:919) at org.apache.hadoop.http.HttpSe ...........................

On successful Data Node PCs the Log looks like this

2015-08-12 15:43:57,520 INFO org.apache.hadoop.http.HttpServer2: Jetty bound to port 34958

2015-08-12 15:43:57,520 INFO org.mortbay.log: jetty-6.1.26

2015-08-12 15:43:57,619 INFO org.mortbay.log: Started HttpServer2$SelectChannelConnectorWithSafeStartup@localhost:34958

I have tried fixing the ports in hdfs-site.xml as explained in the link

But this did not work. Please throw some light in fixing this issue.

Thanks

Upvotes: 1

Views: 2940

Answers (3)

Manu
Manu

Reputation: 1

I have uncommented the following line in /etc/hosts and everything worked fine.

127.0.0.1   localhost

Upvotes: 0

yuxh
yuxh

Reputation: 954

"localhost:0 " please check your /etc/hosts ,most likely this file not set well

Upvotes: 2

java_bee
java_bee

Reputation: 453

This problem is due to the port is already used, hence BindException Thrown. to fix this issue follow the below steps.

1.

run netstat -np command to know the port used with process id

2.

Kill process id for the port which is already bind.

Upvotes: -1

Related Questions