For HDFS federation, data share all datanodes, but namespace is separate,
so did you write some data on hadoop-coc-2 namespace? you don't need to
login hadoop-coc-2 then write data, just config a new client, which connect
to hadoop-coc-2 for write.
On Tue, Mar 3, 2015 at 6:20 PM, xeonmailinglist xeonmailingl...@gmail.com
wrote:
Hi,
I have configured in 2 hosts (hadooop-coc-1, and hadoop-coc-2) a
federation of HDFS. In the configuration, I have set a namespace in each
host, and a single data node (see image). The service is running properly.
You can check the output of the jps commands in [1].
The strange part is that, when I list the files, they do not appear in
hadoop-coc-2. You can check the output in [2]. Why this happens?
[image: hdfsfederation]
[1]: jps output
xubuntu@hadoop-coc-1:~/Programs/hadoop$ jps
21538 NameNode
21773 DataNode
xubuntu@hadoop-coc-2:~/Programs/hadoop$ jps
2342 NameNode
[2]: hdfs dfs -ls / output
xubuntu@hadoop-coc-1:~/Programs/hadoop$ hdfs dfs -ls /
Java HotSpot(TM) Client VM warning: You have loaded library
/home/xubuntu/Programs/hadoop-2.6.0/lib/native/libhadoop.so which might have
disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c
libfile', or link it with '-z noexecstack'.
15/03/03 05:09:04 WARN util.NativeCodeLoader: Unable to load native-hadoop
library for your platform... using builtin-java classes where applicable
Found 1 items
drwxr-xr-x - xubuntu supergroup 0 2015-03-03 04:47 /input1
xubuntu@hadoop-coc-2:~/Programs/hadoop$ hdfs dfs -ls /
Java HotSpot(TM) Client VM warning: You have loaded library
/home/xubuntu/Programs/hadoop-2.6.0/lib/native/libhadoop.so which might have
disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c
libfile', or link it with '-z noexecstack'.
15/03/03 05:09:07 WARN util.NativeCodeLoader: Unable to load native-hadoop
library for your platform... using builtin-java classes where applicable
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