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Posted to common-commits@hadoop.apache.org by Apache Wiki <wi...@apache.org> on 2011/03/01 17:58:21 UTC

[Hadoop Wiki] Update of "FAQ" by QwertyManiac

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The "FAQ" page has been changed by QwertyManiac.
The comment on this change is: Add some of Steve Loughran's thoughts on loading the cluster's configuration in applications..
http://wiki.apache.org/hadoop/FAQ?action=diff&rev1=91&rev2=92

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  Setting configuration properties as final is a common thing Administrators do, as is noted in the [[http://hadoop.apache.org/common/docs/current/api/org/apache/hadoop/conf/Configuration.html|Configuration]] API docs.
  
+ A better alternative would be to have a service serve up the Cluster's configuration to you upon request, in code. [[HADOOP-5670|https://issues.apache.org/jira/browse/HADOOP-5670]] may be of some interest in this regard, perhaps.
+ 
  == Can I write create/write-to hdfs files directly from map/reduce tasks? ==
  Yes. (Clearly, you want this since you need to create/write-to files other than the output-file written out by [[http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/mapred/OutputCollector.html|OutputCollector]].)