Hi Andrei, I am running some experiments to figure out what numThreads param to use while fetching on my machine. I made the mistake of putting the # of map/reduce tasks in hadoop-site.xml and not in mapred-default.xml, however I can clearly see a change in performace for different numbers of threads (I tested using 5 different options, ranging from 10 to 2000).
I was wondering why I am seeing these performance changes even though the number of reduce parts is only 2 for all the experiments. Also, how is the number of fetcher threads param used during generate related to the numthreads param used during fetch? Thank you, -vishal. -----Original Message----- From: Andrzej Bialecki [mailto:[EMAIL PROTECTED] Sent: Thursday, August 03, 2006 8:43 PM To: [email protected] Subject: Re: -numFetchers in generate command Murat Ali Bayir wrote: > Hi everbody, Although we give number of Fetchers in generate command, > our system always produce fixed number of part in reduce process? What > can be reason for this? Do we have to change anything in configuration > file of Hadoop? Most probably you put the numbers of map/reduce tasks in your hadoop-site.xml, right? Move them to mapred-default.xml. Any property that you put into hadoop-site.xml will override all, even job-specific settings. -- Best regards, Andrzej Bialecki <>< ___. ___ ___ ___ _ _ __________________________________ [__ || __|__/|__||\/| Information Retrieval, Semantic Web ___|||__|| \| || | Embedded Unix, System Integration http://www.sigram.com Contact: info at sigram dot com ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Nutch-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nutch-general
