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Re: What should I do with a 48-node cluster - HDFS - [mail # user]
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...Uhm... not exactly. Power consumption is only part of it. ;-) Power consumption by itself is not enough to establish probable cause. If that were the case, there would be ...
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Author: Michael Segel,
2012-12-22, 16:01
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Re: Sane max storage size for DN - HDFS - [mail # user]
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...500 TB? How many nodes in the cluster? Is this attached storage or is it in an array? I mean if you have 4 nodes for a total of 2PB, what happens when you lose 1 node? &...
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Author: Michael Segel,
2012-12-12, 18:58
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Re: using hadoop on zLinux (Linux on S390) - HDFS - [mail # user]
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...Well... I didn't think that the general version contained IBM specific security Java. Your error: JAAS classes:com.ibm.security.auth.LinuxPrincipal (The first line...) Is...
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Author: Michael Segel,
2012-12-11, 15:03
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Re: using hadoop on zLinux (Linux on S390) - HDFS - [mail # user]
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...Well, on the surface.... It looks like its either a missing class, or you don't have your class path set up right. I'm assuming you got this version of Hadoop from IBM, so I wo...
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Author: Michael Segel,
2012-12-11, 14:31
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Re: Hadoop and CUDA - HDFS - [mail # user]
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...Please don't hijack a thread. Start your own discussion. On Oct 16, 2012, at 1:34 AM, sudha sadhasivam wrote: necessary dependencies are added. wrote: runs faster. W...
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Author: Michael Segel,
2012-10-18, 08:42
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Re: Chaning Multiple Reducers: Reduce -> Reduce -> Reduce - HDFS - [mail # user]
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...Jim, You can use the combiner as a reducer albeit you won't get down to a single reduce file output. But you don't need that. As long as the output from the combiner matche...
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Author: Michael Segel,
2012-10-08, 22:50
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Re: Chaning Multiple Reducers: Reduce -> Reduce -> Reduce - HDFS - [mail # user]
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...I don't believe that Hama would suffice. In terms of M/R where you want to chain reducers... Can you chain combiners? (I don't think so, but you never know) If not, you en...
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Author: Michael Segel,
2012-10-08, 11:52
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Re: New Learner for Haddop and Hive - HDFS - [mail # user]
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...How Jason ever got top billing, I'll never know. :-) (Just kidding Jason!) Yes, that's the book. -Mike On Sep 7, 2012, at 1:14 PM, Robert Dyer wrote: wrote: &...
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Author: Michael Segel,
2012-09-07, 18:47
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Re: Data loss on EMR cluster running Hadoop and Hive - HDFS - [mail # user]
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...Next time, try reading and writing to S3 directly from your hive job. Not sure why the block was bad... What did the AWS folks have to say? -Mike On Sep 4, 2012, at 11:30 ...
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Author: Michael Segel,
2012-09-04, 16:43
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Re: Pi Estimator failing to print output after finishing the job sucessfully - HDFS - [mail # user]
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...You blew out the stack? Or rather your number was too 'big'/'long'? On Sep 4, 2012, at 11:10 AM, Gaurav Dasgupta wrote: CDH3u4 cluster. ran fine and displayed ...
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Author: Michael Segel,
2012-09-04, 16:36
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