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Re: mapred.tasktracker.map.tasks.maximum - MapReduce - [mail # user]
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...An important distinction, max slots per node is one thing, and total mappers is something else - it is the total that ran. But now I know where to look. thank you, mark On Tue, N...
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Author: Mark Kerzner,
2012-11-13, 15:52
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Re: mapred.tasktracker.map.tasks.maximum - MapReduce - [mail # user]
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...I am using a Hadoop manager, and it stores the values in a database, outside the configuration files. On Tue, Nov 13, 2012 at 10:27 AM, Jay Vyas wrote: ...
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Author: Mark Kerzner,
2012-11-13, 15:50
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Re: mapred.tasktracker.map.tasks.maximum - MapReduce - [mail # user]
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...Exactly! I found the right one, and it is 80. Thank you, Mark On Tue, Nov 13, 2012 at 10:23 AM, Serge Blazhiyevskyy wrote: ...
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Author: Mark Kerzner,
2012-11-13, 15:25
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Re: mapred.tasktracker.map.tasks.maximum - MapReduce - [mail # user]
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...1.0.1 On Tue, Nov 13, 2012 at 10:18 AM, Serge Blazhiyevskyy wrote: ...
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Author: Mark Kerzner,
2012-11-13, 15:19
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mapred.tasktracker.map.tasks.maximum - MapReduce - [mail # user]
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...Hi, I have a cluster with 4 nodes and 32 many cores on each. My default value for the maximum number of mappers per slot is 1: mapred.tasktracker.map.tasks....
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Author: Mark Kerzner,
2012-11-13, 15:16
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How to control what goes into Hadoop logs? - MapReduce - [mail # user]
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...Hi, My Hadoop cluster runs log with the level of INFO, and it outputs every block-related information to the HDFS log. I would like to keep the INFO level, but suppress block-related i...
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Author: Mark Kerzner,
2012-11-13, 02:00
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Re: Using a hard drive instead of - MapReduce - [mail # user]
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...Colin, swap space would give me very high memory, up to 1 TB, say, but it won't protect me from power failure. Very large clusters is only one application of this idea, warm failover i...
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Author: Mark Kerzner,
2012-10-17, 22:44
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Strata pass for Wednesday and Thursday for sale - MapReduce - [mail # user]
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...Hi, I need to cancel my trip to the conference, and I have a pass for the two days, Wednesday and Thursday, Oct. 24-25. My conference reservation was $876. If anybody is interest...
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Author: Mark Kerzner,
2012-10-16, 20:45
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Re: Using a hard drive instead of - MapReduce - [mail # user]
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...Thank you, everybody, for your input - it was very useful. I need to do my homework now, and I will be back with the update. The device really exists. It is not cheap, but it may make sense ...
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Author: Mark Kerzner,
2012-10-14, 04:07
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Re: Using a hard drive instead of - MapReduce - [mail # user]
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...Harsh, I agree with you about many small files, and I was giving this only in way of example. However, the hard drive I am talking about can be 1-2 TB in size, and that's pretty good, ...
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Author: Mark Kerzner,
2012-10-12, 04:27
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