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Re: disk used percentage is not symmetric on datanodes (balancer) - HDFS - [mail # user]
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...What do you mean that the balancer is always active? It is to be used as a tool and it exits once it balances in a specific run (loops until it does, but always exits at end). The balancer d...
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Author: Harsh J,
2013-03-19, 04:50
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Re: access hadoop cluster from ubuntu on laptop - HDFS - [mail # user]
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...What George's suggested is more of a hack. If you want to write proper impersonation code that works despite the security toggle, follow http://hadoop.apache.org/docs/stable/Secure_Impersona...
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Author: Harsh J,
2013-03-18, 07:24
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Re: OutOfMemory during Plain Java MapReduce - HDFS - [mail # user]
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...Paul's way is much more easier than doing the serialization way I mentioned earlier. I didn't pay attention to the logic used but just the implementation, my bad :) On Fri, Mar 8, 2013...
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Author: Harsh J,
2013-03-09, 00:55
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Re: Job driver and 3rd party jars - HDFS - [mail # user]
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...To be precise, did you use -libjar or -libjars? The latter is the right option. On Fri, Mar 8, 2013 at 12:18 AM, Barak Yaish wrote: Harsh J...
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Author: Harsh J,
2013-03-08, 00:27
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Re: mapred.max.tracker.failures - HDFS - [mail # user]
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...It is a per-job config which controls the automatic job-level blacklist: If, for a single job, a specific tracker has failed 4 (or X) total tasks, then as prevent scheduling anymore of the j...
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Author: Harsh J,
2013-03-07, 06:02
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Re: Best practices for adding services to Hadoop cluster? - HDFS - [mail # user]
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...Can the mapper not directly talk to whatever application server the Windows server runs? Is the work needed to be done in the map step (i.e. per record)? If not, you can perhaps also conside...
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Author: Harsh J,
2013-03-07, 05:21
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Re: location of log files for mapreduce job run through eclipse - HDFS - [mail # user]
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...If you've not changed any configs, look under /tmp/hadoop-${user.name}/ perhaps. On Thu, Mar 7, 2013 at 3:19 AM, Sayan Kole wrote: Harsh J...
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Author: Harsh J,
2013-03-07, 01:01
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Re: preferential distribution of tasks to tasktracker by jobtracker based on specific criteria (cpu frequency) - HDFS - [mail # user]
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...MRv1: Both the CapacityScheduler and FairScheduler support some form of resource aware scheduling (Capacity supports memory provisions while Fair provides an interface you can plug into to i...
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Author: Harsh J,
2013-03-07, 01:00
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Re: mapper combiner and partitioner for particular dataset - HDFS - [mail # user]
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...The MultipleInputs class only supports mapper configuration per dataset. It does not let you specify a partitioner and combiner as well. You will need a custom written "high level" partition...
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Author: Harsh J,
2013-03-03, 11:28
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Re: Urgent Requirement: How to copy File from One cluster to another cluster using java client(throught java Program) - HDFS - [mail # user]
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...Samir, It was pointed out by another member in your earlier post but here it is again. The error returned is sorta clear enough: org.apache.hadoop.security.AccessControlException...
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Author: Harsh J,
2013-03-02, 05:45
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