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notorious org.apache.hadoop.ipc.RemoteException: java.io.IOException: File ... could only be replicated to 0 nodes, instead of... < SOLVED > - MapReduce - [mail # user]
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...Guys, In case you ever run into this Error the likely problem is you run out of disk space. To prove it, just before the error is thrown, log into your namenode WebUI: :50070 and watch...
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Author: Kartashov, Andy,
2012-11-19, 15:52
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RE: a question on NameNode - MapReduce - [mail # user]
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...Thank you Kai and Tariq. From: Mohammad Tariq [mailto:[EMAIL PROTECTED]] Sent: Monday, November 19, 2012 10:20 AM To: [EMAIL PROTECTED] Subject: Re: a question on NameNode Hello ...
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Author: Kartashov, Andy,
2012-11-19, 15:44
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RE: a question on NameNode - MapReduce - [mail # user]
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...Thank you Kai.. One more question please. Does MapReduce run tasks of redundant blocks ? Say you have only 1 block of data replicated 3 times, one block over each of three DNodes...
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Author: Kartashov, Andy,
2012-11-19, 15:14
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RE: a question on MapReduce - MapReduce - [mail # user]
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...Hehe,... good to know. Thanks. From: Mohammad Tariq [mailto:[EMAIL PROTECTED]] Sent: Monday, November 19, 2012 9:50 AM To: [EMAIL PROTECTED] Subject: Re: a question on MapReduce ...
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Author: Kartashov, Andy,
2012-11-19, 15:04
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RE: a question on NameNode - MapReduce - [mail # user]
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...Awesome, thanks. So, what if DN2 is down, i.e. it is not sending any blocks' report. Then NN (I guess) will figure out that it has 2 blocks (3,4) that has no home and that (witho...
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Author: Kartashov, Andy,
2012-11-19, 14:43
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RE: a question on MapReduce - MapReduce - [mail # user]
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...Guys, Sometimes when I run my MR job I see that Reduce tasks kick in as early as when Map task reached only about 20%. How can the MR be possibly so sure and start running Reduce at th...
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Author: Kartashov, Andy,
2012-11-19, 14:37
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RE: notorious ClassNotFoundError - MapReduce - [mail # user]
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...Oh my Gosh!!! This exact error happened to me before, the very first time I installed hadoop. Spent days solving that exact problem. It got resolved on its own so I had no idea what ex...
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Author: Kartashov, Andy,
2012-11-16, 22:06
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RE: notorious ClassNotFoundError - MapReduce - [mail # user]
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...I am running MR in pseudo distributed mode - so it is only one Node involced. From: Joey Krabacher [mailto:[EMAIL PROTECTED]] Sent: Friday, November 16, 2012 4:16 PM To: [EMAIL PROTECT...
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Author: Kartashov, Andy,
2012-11-16, 21:30
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notorious ClassNotFoundError - MapReduce - [mail # user]
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...Guys, The notorious error. Used all possible clues to resolve this. Ran sqoop --import.... at command line without problems. But whenever am trying to execute MR jo...
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Author: Kartashov, Andy,
2012-11-16, 21:13
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RE: High Availability - second namenode (master2) issue: Incompatible namespaceIDs - MapReduce - [mail # user]
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...Vinay, Two questions. 1. Configure the another namenode's configuration. What exactly to configure. 2. ...
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Author: Kartashov, Andy,
2012-11-16, 14:15
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