if you do not put namenode in safemode that means your namenode can still accept request to write or delete files from hdfs. This may cause your snapshot to be a problematic in case you want to restore from it. Safemode is just an ensuring point that you have a standstill image to snapshot.
On Tue, May 14, 2013 at 12:27 PM, Sandeep Nemuri <nhsande...@gmail.com>wrote: > Withuot going to safemode can't we get the Namespace ?? > > > On Tue, May 14, 2013 at 12:18 PM, Ling Kun <lkun.e...@gmail.com> wrote: > >> Hi Aditya: >> This command line may help you: >> >> hadoop dfsadmin --saveNamespace >> >> you should firstly perform it in safe mode. >> >> The corresponding design and implementation is described here: >> https://issues.apache.org/jira/browse/HADOOP-4826 >> >> >> yours, >> Ling Kun >> >> >> >> On Tue, May 14, 2013 at 2:37 PM, Aditya exalter >> <adityaexal...@gmail.com>wrote: >> >>> Hi, >>> >>> How to get the namenode data(edits and fsimage) from the main >>> memory(RAM) >>> >>> >>> >>> >>> >> >> >> -- >> http://www.lingcc.com >> > > > > -- > --Regards > Sandeep Nemuri > -- Nitin Pawar
