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[MAPREDUCE-4709] Counters that track max values - MapReduce - [issue]
...A nice feature to help monitor MR jobs would be mapreduce counters that track the maximum of some metric across all workers. These trackers would work just like regular counters except it wo...
http://issues.apache.org/jira/browse/MAPREDUCE-4709    Author: Jeremy Lewi, 2013-01-25, 13:50
[expand - 2 more] - Re: Counters that track the max value - MapReduce - [mail # user]
...Done. https://issues.apache.org/jira/browse/MAPREDUCE-4709  Thanks J  On Fri, Oct 5, 2012 at 10:13 AM, Harsh J  wrote:  ...
   Author: Jeremy Lewi, 2012-10-05, 17:40
[expand - 2 more] - Re: Hadoop Streaming job Fails - Permission Denied error - MapReduce - [mail # user]
...Benjoy to redirect stdout add the lines  import sys sys.stdout=sys.stderr  to the top of your py files (i.e right after the shebang line).  J  On Tue, Sep 13, 2011 at 1:4...
   Author: Jeremy Lewi, 2011-09-13, 20:09
Re: mapreduce and python - MapReduce - [mail # user]
...Hassen,  I've been very succesful using Hadoop Streaming, Dumbo, and TypedBytes as a solution for using python to implement mappers and reducers.  TypedBytes is a hadoop encoding f...
   Author: Jeremy Lewi, 2011-06-21, 05:13
Re: Sequence file format in python and serialization - MapReduce - [mail # user]
...JJ  If you want to use complex types in a streaming job I think you need to encode the values using the typedbytes format within the sequence file; i.e the key and value in the sequence...
   Author: Jeremy Lewi, 2011-06-02, 13:12
Re: debug mapreduce basics - MapReduce - [mail # user]
...Mike,  Check out this wiki http://code.google.com/p/hadoop-clusternet/wiki/DebuggingJobsUsingEclipse  It shows how if your running in stand alone mode you can run a job in debug mo...
   Author: Jeremy Lewi, 2011-04-28, 23:58
Re: what is the difference between the two packages "org.apache.hadoop.mapreduce" and "org.apache.hadoop.mapred"? - MapReduce - [mail # user]
...org.apache.hadoop.mapreduce is a newer api. To avoid breaking backwards compatibility the older api, org.apache.hadoop.mapred was preserved, and the newer api was just given a new name. &nbs...
   Author: Jeremy Lewi, 2011-04-26, 12:43
Re: Creating another map reduce task in a map function - MapReduce - [mail # user]
...Ranjith,  Have you looked at Hadoop Cascading http://www.cascading.org/ ? Its a framework for creating pipelines for processing data ontop of Map-Reduce. It sounds like it might work fo...
   Author: Jeremy Lewi, 2011-04-23, 14:39
Can't set stream.addenvironment in job configuration file - MapReduce - [mail # user]
...Hi,    I'm trying to submit a streaming job using the -conf option to specify    a job configuration file.    One of the options in my configuration file is str...
   Author: Jeremy Lewi, 2011-04-08, 04:35
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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