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Re: Maintaining map reduce job logs - The best practices - MapReduce - [mail # user]
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...Great!.. Thanks Raj and Mathias Just a clarification query on top of my question. I wanna log some information of my processing/data logged into my log files. I'm planning to log it by...
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Author: bejoy.hadoop@...,
2011-09-23, 16:35
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Re: Error in configuring object - MapReduce - [mail # user]
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...Shreya Like Harsh mentioned it is really straight forward. May be a few points to keep in mind 1. In default the separator between key and value is tab chara...
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Author: bejoy.hadoop@...,
2011-09-17, 18:24
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Re: Reducers without output files - MapReduce - [mail # user]
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...Avro You are right. A minor correction, you can't use new NullWritable() and create an object. NullWritable is immutable and Singleton unlike the other Writables in hadoo...
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Author: bejoy.hadoop@...,
2011-09-15, 06:02
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Re: Debugging Mapreduce programs - MapReduce - [mail # user]
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...Shreya There are multiple ways to debug map reduce programs. I found comfortable using the jobtracker web UI. You can your job tracker web UI at http://:50030/jobtracker...
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Author: bejoy.hadoop@...,
2011-09-15, 04:19
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Re: Reducers without output files - MapReduce - [mail # user]
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...Akro To add on, if you want to ignore the key part then substitute key with NullWritable. And do the desired modification in driver class in place of output key typ...
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Author: bejoy.hadoop@...,
2011-09-15, 04:12
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Re: Reducers without output files - MapReduce - [mail # user]
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...Hi Akro You can achieve the same within the existing mapreduce frame work itself. Give a NullWritable in place of reducer output value in reduce function. In your ...
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Author: bejoy.hadoop@...,
2011-09-15, 04:09
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Re: Issues starting TaskTracker - MapReduce - [mail # user]
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...Hi Shreya I'm not well verse with the Cygwin setup in windows. Even I tried cygwin for hadoop but was running into multiple issues,So dropped it then n there...
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Author: bejoy.hadoop@...,
2011-09-14, 18:20
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