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Re: writing mappers and reducers question - Hadoop - [mail # user]
...Nope. You can use the Standalone setup too to test things. Details here:http://hadoop.apache.org/docs/r2.2.0/hadoop-project-dist/hadoop-common/SingleNodeSetup.html#Standalone_OperationRegard...
   Author: Shahab Yunus, 2015-02-20, 05:46
[expand - 1 more] - Re: Creation of an empty output directory in hadoop filesystem - Hadoop - [mail # user]
...First try:You should use @Override annotation before map and reduce methods so theyare actually called.Like this:*@Override* public void map(LongWritable k,Text v,Context con)throwsIOEx...
   Author: Shahab Yunus, 2015-01-07, 13:26
Re: Write and Read file through map reduce - Hadoop - [mail # user]
...Distributed Cache has been deprecated for a while. You can use the newmechanism, which is functionally the same thing, discussed here in thisthread:http://stackoverflow.com/questions/2123972...
   Author: Shahab Yunus, 2015-01-06, 13:45
Re: FileNotFoundException in distributed mode - Hadoop - [mail # user]
...You should not use DistrubutedCache. It is deprecated.See this:http://stackoverflow.com/questions/21239722/hadoop-distributedcache-is-deprecated-what-is-the-preferred-apiRegards,ShahabOn Mon...
   Author: Shahab Yunus, 2014-12-22, 13:06
Re: DistributedCache - Hadoop - [mail # user]
...Look at this thread. It has alternatives to DistributedCache.http://stackoverflow.com/questions/21239722/hadoop-distributedcache-is-deprecated-what-is-the-preferred-apiBasically you can use ...
   Author: Shahab Yunus, 2014-12-12, 04:25
Re: HDFS block size question - Hadoop - [mail # user]
...Check this out:http://ofirm.wordpress.com/2014/02/01/exploring-the-hdfs-default-value-behaviour/"It seems that the value of *dfs.block.size* is dictated directly by theclient, regarding of t...
   Author: Shahab Yunus, 2014-12-10, 20:39
Re: hadoop data structures - Hadoop - [mail # user]
...Are you asking about the type for the numberOfRuns variable which you aredeclaring as a Java primitive int?If yes, then you can use IntWritable class in Hadoop to define a integervariable wh...
   Author: Shahab Yunus, 2014-12-09, 13:35
Re: SSH passwordless & Hadoop starup/shutdown scripts - Hadoop - [mail # user]
...Good. Can you share what was the issue do it can help others? Thanks.Regards,ShahabOn Wed, Nov 26, 2014 at 6:41 PM, John Beaulaurier -X (jbeaulau - ADVANCEDNETWORK INFORMATION INC at Cisco) ...
   Author: Shahab Yunus, 2014-11-26, 23:47
Re: Doubts in Map reduce programs - Hadoop - [mail # user]
...One way that I can think of is that you basically need to define your ownInputFormal and RecordReader so that each record is 'a paragraph' or a'sentence'. The reason being that in regular ca...
   Author: Shahab Yunus, 2014-11-01, 15:53
Re: How to limit the number of containers requested by a pig script? - Hadoop - [mail # user]
...Jakub, are you saying that we can't change the mappers per job through thescript, right? Because, otherwise, if invoking through command line orcode, then we can, I think. We do have this pr...
   Author: Shahab Yunus, 2014-10-21, 11:31
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB