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java.io.IOException: Bad connect ack with firstBadLink - Hadoop - [mail # user]
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...Hi , running hadoop map/reduce got such exception? 1) Why does it happen? 2) Job didn't failed and continue it's execution? Does this exception cause losing data or...
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Author: Oleg Ruchovets,
2010-11-09, 10:58
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what does it mean -- java.io.IOException: Filesystem closed - Hadoop - [mail # user]
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...Hi , Running jadoop job from time to time I got such exception (from one of the reducers): The questions are : 1) What does this exception means for the data integrity? 2) Does ...
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Author: Oleg Ruchovets,
2010-11-02, 18:38
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how to find out: which files related to current hadoop task - Hadoop - [mail # user]
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...Hi , Running a hadoop job which manipulates ~ 4000 files (files ar gz) , and suppose one of this gz was corrupted. From web console /log files I can see which task got exception ...
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Author: Oleg Ruchovets,
2010-10-26, 19:43
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write files to hdfs from osgi - Hadoop - [mail # user]
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...Hi , I need to write files to hdfs file system using hdfs java api . In my case I need that hdfs client runs from OSGi. 1) Does someone succeed to use hdfs client from OSGi container? ...
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Author: Oleg Ruchovets,
2010-07-06, 15:06
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copy files to HDFS protocols - Hadoop - [mail # user]
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...Hi , I use HDFS Shell to copy files from local FileSystem to Hadoop HDFS. (copyFromLocal command). 1) How can I provide Path to file which locates on local F...
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Author: Oleg Ruchovets,
2010-06-30, 08:59
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Re: the same key in different reducers - Hadoop - [mail # user]
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...Hi and thank you for the answers. I didn't check the email and now I see 7 answers. It is really great. Let me explain in more details why I am asking so strange question :-) &n...
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Author: Oleg Ruchovets,
2010-06-10, 16:27
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the same key in different reducers - Hadoop - [mail # user]
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...Hi , My hadoop job writes results of map/reduce to HBase. I have 3 reducers. Here is a sequence of input and output parameters for Mapper , Combiner and Reducer *input: I...
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Author: Oleg Ruchovets,
2010-06-09, 08:17
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Re: best practice to work with resources - Hadoop - [mail # user]
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...Thank you for detailed answer: On Tue, May 25, 2010 at 5:48 PM, Harsh J wrote: using java code. Is it possible work with resources without java code changes? I mean w...
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Author: Oleg Ruchovets,
2010-05-25, 15:37
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best practice to work with resources - Hadoop - [mail # user]
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...Hi all. I have some data stored in properties file/s and need that hadoop job uses it. What is the best practice to work hadoop job with resources like properties files? Does had...
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Author: Oleg Ruchovets,
2010-05-25, 13:55
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execute mapreduce job on multiple hdfs files - Hadoop - [mail # user]
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...Hi , All examples that I found executes mapreduce job on a single file but in my situation I have more than one. Suppose I have such folder on HDFS which contains some files: &n...
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Author: Oleg Ruchovets,
2010-03-23, 10:18
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