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Re: Best practice for storage of data that changes - Hadoop - [mail # user]
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...Hi Jeff, My two cents below: 1st use case: Append-only data - e.g. weblogs or user logins As others have already mentioned that Hadoop is suitable enough to store append only dat...
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Author: anil gupta,
2012-11-25, 21:11
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Re: Broad question on sorting of mapper outputs. - Hadoop - [mail # user]
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...Hi Jay, AFAIK, when the MR does not have a reducer phase(i.e. no. of reducer=0) then the output from Mapper is not sorted. HTH, Anil On Fri, Oct 19, 2012 at 8:19 PM, Jay Vy...
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Author: anil gupta,
2012-10-24, 22:01
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Re: Problem with one of teh datanodes - Hadoop - [mail # user]
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...Hi Siddharth, This is a very common error faced by users after formatting namenode. You need to clean up your dfs data directories across the cluster. This discussion will help you res...
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Author: anil gupta,
2012-09-09, 07:30
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Re: HBase MasterNotRunningException - Hadoop - [mail # user]
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...Sorry, I messed up my last email. Please ignore that. In addition to Stack's suggestion, use DNS names instead of IP address in configuration of Hadoop and HBase. Its a bad idea to use...
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Author: anil gupta,
2012-08-30, 22:56
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Re: HBase MasterNotRunningException - Hadoop - [mail # user]
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...In addition to Stack's suggestion, use DNS names instead of IP address in configuration of Hadoop and HBase. Its a bad idea to use DNS names in configuration. Check your DNS configuration fi...
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Author: anil gupta,
2012-08-30, 22:54
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Re: HBase MasterNotRunningException - Hadoop - [mail # user]
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...If possible, try to run netstat as sudo. On Thu, Aug 30, 2012 at 11:21 AM, anil gupta wrote: Thanks & Regards, Anil Gupta...
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Author: anil gupta,
2012-08-30, 18:22
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Re: HBase MasterNotRunningException - Hadoop - [mail # user]
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...Can you also try to run telnet and netstat for port: 60030 and 60010 ? I dont see post 60030 and 60010 in the output of netstat. Did you configured some other ports for HBase Master? 2...
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Author: anil gupta,
2012-08-30, 18:21
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Re: HBase MasterNotRunningException - Hadoop - [mail # user]
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...Then, it might be a issue with port binding. try to do telnet on the port to which HBase listens from localhost as well as remote machine. Also, try to run the netstat command and see the bi...
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Author: anil gupta,
2012-08-30, 15:28
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Re: HBase MasterNotRunningException - Hadoop - [mail # user]
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...Hi Jilani, It seems like a firewall issue. You will need to open appropriate ports or disable the firewall on the machine you are running the service. HTH, Anil On Thu, Aug...
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Author: anil gupta,
2012-08-30, 15:05
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Re: Relevance of mapreduce.* configuration properties for MR V2 - Hadoop - [mail # user]
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...Hi, AFAIK, these properties are being ignored by YARN: - mapreduce.tasktracker.map.tasks.maximum, - mapreduce.tasktracker.reduce.tasks.maximum Thanks, Anil Gupta On Thu, A...
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Author: anil gupta,
2012-08-16, 16:40
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