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Re: Reflect MySQL updates into Hive - Hive - [mail # user]
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...Hello Ibrahim, A quick questio. Are you planning to replace your SQL DB with Hive? If that is the case, I would not suggest to do that. Both are meant for entirely diffe...
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Author: Mohammad Tariq,
2012-12-24, 13:19
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Re: Incresing map reduce tasks will increse the time of the cpu does this seem to be correct - Hive - [mail # user]
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...I said that because under the hood each query(Hive or Pig) gets converted into a MapReduce job first, and gives you the result. Regards, Mohammad Tariq On Th...
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Author: Mohammad Tariq,
2012-12-13, 14:23
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Re: Incresing map reduce tasks will increse the time of the cpu does this seem to be correct - Hive - [mail # user]
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...You are welcome. First things first. We can never compare Hadoop with traditional warehouse systems or DBMSs. Both are meant for different purposes. One small example, consider y...
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Author: Mohammad Tariq,
2012-12-13, 13:59
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Re: Incresing map reduce tasks will increse the time of the cpu does this seem to be correct - Hive - [mail # user]
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...Hello Imen, If you have huge no of tasks then the overhead of managing the map and reduce task creation begins to dominate the total job execution time. Also, more...
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Author: Mohammad Tariq,
2012-12-13, 10:50
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Re: Modify the number of map tasks - Hive - [mail # user]
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...No. But the process is pretty simple. You just have to copy the set of conf file across all the machines after a few minor changes. The process goes like this : Add the IPs and hostnames of ...
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Author: Mohammad Tariq,
2012-12-12, 15:37
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Re: Modify the number of map tasks - Hive - [mail # user]
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...Hi Imen, I am sorry, I didn't get the question. Are you asking about creating a distributed cluster? Yeah, I have done that. Regards, M...
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Author: Mohammad Tariq,
2012-12-12, 14:48
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Re: Modify the number of map tasks - Hive - [mail # user]
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...You are always welcome. If you still need any help, you can go here : http://cloudfront.blogspot.in/2012/07/how-to-configure-hadoop.html I have outlined the entire process here along with fe...
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Author: Mohammad Tariq,
2012-12-12, 14:07
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Re: Modify the number of map tasks - Hive - [mail # user]
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...Uncomment the property in core-site.xml. That is a must. After doing this you have to restart the daemons? Regards, Mohammad Tariq On Wed, Dec 12, 2012...
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Author: Mohammad Tariq,
2012-12-12, 13:48
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Re: Modify the number of map tasks - Hive - [mail # user]
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...I wonder how you are able to run the job without a JT. You must have this on your mapred-site.xml file : mapred.job.tracker localhost:9001 Also...
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Author: Mohammad Tariq,
2012-12-12, 13:22
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Re: Modify the number of map tasks - Hive - [mail # user]
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...Can I have a look at your config files? Regards, Mohammad Tariq On Wed, Dec 12, 2012 at 6:31 PM, imen Megdiche wrote: ...
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Author: Mohammad Tariq,
2012-12-12, 13:07
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