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Posted to common-commits@hadoop.apache.org by Apache Wiki <wi...@apache.org> on 2011/09/30 18:38:20 UTC
[Hadoop Wiki] Trivial Update of "BindException" by SteveLoughran
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The "BindException" page has been changed by SteveLoughran:
http://wiki.apache.org/hadoop/BindException?action=diff&rev1=1&rev2=2
Comment:
fix formatting
You can get a BindException {{{java.net.BindException: Address already in use}}} if a socket on a machine is already in use and a service (NameNode, JobTracker, DataNode, TaskTracker, HTTP Server, etc.) tries to create a sort on that same port to listen for incoming requests.
How to track down the problem
- 1. identify which port the program is trying to bind to
+ 1. identify which port the program is trying to bind to
- 1. use {{{netstat -a -t --numeric-ports -p}}} to list the ports that are in use by number and process.
+ 1. use {{{netstat -a -t --numeric-ports -p}}} to list the ports that are in use by number and process.
- 1. identify the port that is in use and the program that is in use
+ 1. identify the port that is in use and the program that is in use
- 1. try and identify why it is in use. Telnet <port> and pointing a web browser at it are both good tricks.
+ 1. try and identify why it is in use. Telnet <port> and pointing a web browser at it are both good tricks.
- 1. change the configuration of one of the programs to listen on a different port.
+ 1. change the configuration of one of the programs to listen on a different port.