Re: specific block size for a file

2009-05-05 Thread jason hadoop
Trade off between hdfs efficiency and data locality. On Tue, May 5, 2009 at 9:37 AM, Arun C Murthy wrote: > > On May 5, 2009, at 4:47 AM, Christian Ulrik Søttrup wrote: > > Hi all, >> >> I have a job that creates very big local files so i need to split it to as >> many mappers as possible. Now

Re: specific block size for a file

2009-05-05 Thread Arun C Murthy
On May 5, 2009, at 4:47 AM, Christian Ulrik Søttrup wrote: Hi all, I have a job that creates very big local files so i need to split it to as many mappers as possible. Now the DFS block size I'm using means that this job is only split to 3 mappers. I don't want to change the hdfs wide bloc

Re: specific block size for a file

2009-05-05 Thread Christian Ulrik Søttrup
Cheers, that worked. jason hadoop wrote: Please try -D dfs.block.size=4096000 The specification must be in bytes. On Tue, May 5, 2009 at 4:47 AM, Christian Ulrik Søttrup wrote: Hi all, I have a job that creates very big local files so i need to split it to as many mappers as possible. N

Re: specific block size for a file

2009-05-05 Thread jason hadoop
Please try -D dfs.block.size=4096000 The specification must be in bytes. On Tue, May 5, 2009 at 4:47 AM, Christian Ulrik Søttrup wrote: > Hi all, > > I have a job that creates very big local files so i need to split it to as > many mappers as possible. Now the DFS block size I'm > using means t

specific block size for a file

2009-05-05 Thread Christian Ulrik Søttrup
Hi all, I have a job that creates very big local files so i need to split it to as many mappers as possible. Now the DFS block size I'm using means that this job is only split to 3 mappers. I don't want to change the hdfs wide block size because it works for my other jobs. Is there a way to g