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Posted to common-commits@hadoop.apache.org by Apache Wiki <wi...@apache.org> on 2008/07/18 16:51:22 UTC

[Hadoop Wiki] Update of "FAQ" by ErikBakker

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The following page has been changed by ErikBakker:
http://wiki.apache.org/hadoop/FAQ

The comment on the change is:
See http://issues.apache.org/jira/browse/HADOOP-3499

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  Hadoop offers the ''decommission'' feature to retire a set of existing data-nodes.
  The nodes to be retired should be included into the ''exclude file'', and the exclude file name should 
  be specified as a configuration parameter
- [http://hadoop.apache.org/core/docs/current/hadoop-default.html#dfs.hosts.exclude dfs.hosts.exclude]. This file should have been specified during namenode startup. It could be a zero length file.
+ [http://hadoop.apache.org/core/docs/current/hadoop-default.html#dfs.hosts.exclude dfs.hosts.exclude]. This file should have been specified during namenode startup. It could be a zero length file. You must use the full hostname, ip or ip:port format in this file. 
  Then the shell command
  {{{
  bin/hadoop dfsadmin -refreshNodes