Hi Praveenesh,
You just need to restart the hadoop services. Reformatting the namenode
causes the lose of metadata and there by loss of data residing in datanodes.
Regards,
Srinivas,
Cloudwick Technologies.
On Mon, Jan 9, 2012 at 12:26 AM, praveenesh kumar wrote:
> Hey Guys,
>
> Do I need to fo
Praveenesh,
*Never* reformat your namenode unless you want to blow all your files away and
start afresh. No configuration change will ever demand that you reformat your
NameNode.
* Block size is per-file, so you can change this config to affect the default
of all new files, but to change older
Hey Guys,
Do I need to format the namenode again if I am changing some HDFS
configurations like blocksize, checksum, compression codec etc or is there
any other way to enforce these new changes in the present cluster setup ?
Thanks,
Praveenesh
