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Re: Sequence File usage queries - MapReduce - [mail # user]
...I didn't find SequenceFile metadata viewer. You need to write some code for #2 below.  On Wed, Feb 23, 2011 at 4:24 PM, Mapred Learn wrote:  ...
2 emails [+ more]    Author: Ted Yu, 2011-02-24, 00:36
Re: DistributedCache.addFileToClassPath() - MapReduce - [mail # dev]
...The issue was due to (incomplete) refactoring done by my coworker.  FYI  On Sat, Feb 5, 2011 at 4:36 PM, Ted Yu  wrote:  ...
3 emails [+ more]    Author: Ted Yu, 2011-02-08, 00:40
Re: "Map input bytes" vs HDFS_BYTES_READ - MapReduce - [mail # dev]
...Ravi: Can you illustrate the situation where map output doesn't fit in io.sort.mb ?  Thanks  On Thu, Feb 3, 2011 at 8:14 PM, Ravi Gummadi  wrote:  ...
5 emails [+ more]    Author: Ted Yu, 2011-02-04, 04:34
UniqValueCount - MapReduce - [mail # dev]
...Hi, For 0.20.2, the following page doesn't contain usage: http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/hadoop/mapred/lib/aggregate/class-use/UniqValueCount.html  where ca...
   Author: Ted Yu, 2011-01-07, 18:18
Re: Passing messages - MapReduce - [mail # user]
...In your reducer, you can utilize Reporter (getCounter and incrCounter methods) to pass this information between reducers.  On Sat, Dec 18, 2010 at 8:04 AM, Martin Becker  wrote: &n...
   Author: Ted Yu, 2010-12-18, 16:44
Re: object Writable and Serialization - MapReduce - [mail # user]
...Old bits:  Can you try adding 'org.apache.hadoop.io. serializer.JavaSerialization,' to the following config ? "C:\hadoop-0.20.2\src\core\core-default.xml"(87,9):   io.serialization...
   Author: Ted Yu, 2010-12-10, 15:50
Re: How to share Same Counter in Multiple Jobs? - MapReduce - [mail # user]
...I wrote the following code today. We have our own flow execution logic which calls the following to collect counters.      enum COUNT_COLLECTION {         ...
   Author: Ted Yu, 2010-12-10, 05:51
Re: Memory Manager in Hadoop MR - MapReduce - [mail # user]
...For 1, TMMT uses ProcessTree to check for task that is running beyond memory-limits and kills it.  On Thu, Dec 9, 2010 at 3:05 AM, Pedro Costa  wrote:  ...
   Author: Ted Yu, 2010-12-09, 18:17
Re: task statistics - MapReduce - [mail # user]
...We use the following in our client:         JobClient jobClient = new JobClient(jobConf);         TaskReport[] mapTaskReports  jobClient.getMapTa...
   Author: Ted Yu, 2010-12-06, 21:22
Re: obtain task log programmatically - MapReduce - [mail # dev]
...Dick: Your patch is not in Apache release yet. Do you know when it would be ?  Thanks  On Tue, Nov 30, 2010 at 11:28 AM, Dick King  wrote:  ...
3 emails [+ more]    Author: Ted Yu, 2010-12-02, 15:52
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