Hello,
I'm in the trying to figure out how to decommission data nodes. Here's what
I do:
In hdfs-site.xml I have:
<property>
<name>dfs.hosts.exclude</name>
<value>/opt/hadoop/hadoop-1.0.0/conf/exclude</value>
</property>
Add to exclude file:
host1
host2
Then I run 'hadoop dfsadmin -refreshNodes'. On the web interface the two
nodes now appear in both the 'Live Nodes' and 'Dead Nodes' (but there's
nothing in the Decommissioning Nodes list). If I look at the datanode logs
running on host1 or host2, I still see blocks being copied in and it does
not appear that any additional replication was happening.
What am I missing during the decommission process?
-Chris
