Hi Harsh, On 9/22/11 8:48 PM, "Harsh J" <[email protected]> wrote:
>Ivan, > >Writing your own program was overkill. > >The 'yes' coreutil is pretty silly, but nifty at the same time. It >accepts an argument, which it would repeat infinitely. > >So: > >$ yes Y | hadoop namenode -format > >Would do it for you. Nice! I read the man page for yes too quickly and did not see that option. Thanks! >(Note that in the future release, saner answers will be acceptable, >i.e. y instead of strictly Y, etc.) Y/y/yes/YES would all seem like good things to accept :) >Also, two other things: > >- What do you mean by 'Yeah I have a secondary namenode as well so 2 >directories.'? A secondary namenode uses different directories than >dfs.name.dir. Which parameter are you referring to? I am planning on using 2 directories in dfs.name.dir, one is local and the other is an NFS mount of a 2nd machine running the secondary namenode. >- The prompt only appears when it detects a 'reformat' being happening >- which is very dangerous to do non-interactively. If you do the >-format the first time, on clean dfs.name.dir setups, you will never >receive a prompt. Yeah I am creating some automation, so it needs to be able to wipe out an existing filesystem and start over...... Cheers, Ivan >
