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Number of retries - Hadoop - [mail # user]
...I am seeing wierd problem where I am seeing duplicate rows in the database. I am wondering if this is because of some internal retries that might be causing this. Is there a way to look at w...
   Author: Mohit Anchlia, 2012-03-22, 19:51
Re: setNumTasks - Hadoop - [mail # user]
...Sorry I meant *setNumMapTasks. *What is mapred.map.tasks for? It's confusing as to what it's purpose is for? I tried setting it for my job still I see more map tasks running than *mapred.map...
3 emails [+ more]    Author: Mohit Anchlia, 2012-03-22, 14:58
Re: Snappy Error - Hadoop - [mail # user]
...Looks like org.apache.hadoop.io.compress.SnappyCodec is not in the classpath?  On Thu, Mar 22, 2012 at 4:30 AM, hadoop hive  wrote:  ...
   Author: Mohit Anchlia, 2012-03-22, 14:23
Re: EOFException - Hadoop - [mail # user]
...I guess I am trying to see how to debug such problems? I don't see enough info in the logs.   On Mon, Mar 19, 2012 at 12:48 AM, madhu phatak  wrote:  ...
3 emails [+ more]    Author: Mohit Anchlia, 2012-03-19, 14:26
Re: SequenceFile split question - Hadoop - [mail # user]
...Thanks! that helps. I am reading small xml files from external file system and then writing to the SequenceFile. I made it stand alone client thinking that mapreduce may not be the best way ...
2 emails [+ more]    Author: Mohit Anchlia, 2012-03-15, 14:47
Cannot renew lease for DFSClient_977492582. Name node is in safe mode in AWS - Hadoop - [mail # user]
...When I run client to create files in amazon HDFS I get this error. Does anyone know what it really means and how to resolve this?    2012-03-14 23:16:21,414 INFO org.apache.hadoop....
   Author: Mohit Anchlia, 2012-03-15, 00:24
Re: mapred.tasktracker.map.tasks.maximum not working - Hadoop - [mail # user]
...Thanks. Looks like there are some parameters that I can use at client level and others need cluster wide setting. Is there a place where I can see all the config parameters with description ...
2 emails [+ more]    Author: Mohit Anchlia, 2012-03-10, 17:14
Re: mapred.map.tasks vs mapred.tasktracker.map.tasks.maximum - Hadoop - [mail # user]
...Is this system parameter too? Or can I specify as mapred.map.tasks? I am using pig.  On Fri, Mar 9, 2012 at 6:19 PM, Chen He  wrote:  ...
3 emails [+ more]    Author: Mohit Anchlia, 2012-03-10, 04:34
Re: Profiling Hadoop Job - Hadoop - [mail # user]
...Can you check which user you are running this process as and compare it with the ownership on the directory?  On Thu, Mar 8, 2012 at 3:13 PM, Leonardo Urbina  wrote:  ...
   Author: Mohit Anchlia, 2012-03-09, 00:10
Re: Java Heap space error - Hadoop - [mail # user]
...I am still trying to see how to narrow this down. Is it possible to set heapdumponoutofmemoryerror option on these individual tasks?  On Mon, Mar 5, 2012 at 5:49 PM, Mohit Anchlia wrote...
4 emails [+ more]    Author: Mohit Anchlia, 2012-03-06, 18:10
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