FAQ
We have a cluster with 4 Cloudera VMs -

hadoop fs -ls /
says
10/07/12 05:42:22 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8022. Already tried 0 time(s).
10/07/12 05:42:23 INFO ipc.Client: Retrying connect to server: localhost/
127.0.0.1:8022. Already tried 1 time(s).

on one box

1) How do I restart
2) I edited /ect/hadoop/conf/hdfs-site.xml to add a second drive to hdfs

<property>
<!-- specify this so that running 'hadoop namenode -format' formats the
right dir -->
<name>dfs.name.dir</name>
<value>/var/lib/hadoop-0.20/cache/hadoop/dfs/name*,/local*</value>
</property>

What other steps are needed - i.e do I need to format the space, restart
hadoop, restart the cluster ???

--
Steven M. Lewis PhD
Institute for Systems Biology
Seattle WA

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