Which is why you need your HDFS shutdown before this is done. See http://search-hadoop.com/m/fSof91EYbe9 and http://wiki.apache.org/hadoop/FAQ#On_an_individual_data_node.2C_how_do_you_balance_the_blocks_on_the_disk.3F
On 31-Oct-2011, at 8:39 PM, Tomasz Chmielewski wrote: > On 31.10.2011 15:37, Jeff Bean wrote: >> IIUC you can move the data block files from one disk to another until they >> are evenly distributed. Give it a shot. > > Just like that? Using "mv" command? > > I.e. move /data2/hdfs/data/current/subdir44/* to > /data3/hdfs/data/current/subdir44/ > > ? > > > It's not atomic, so at some point, /data3/ would contain a file which is not > a full copy of the same file on /data2/; later, both /data2 and /data3 would > contain identical file. > > > -- > Tomasz Chmielewski > http://wpkg.org >
