Checking NameNode log would help. Mostly likely reason would be that you
didn't give '-upgrade' option to 'start-dfs.sh' script. HDFS forces you
to run with this option when you go to newer versions.
Yes, it is not very kind to innocent users.. but it's been that way
mainly to avoid accidental upgrade or data loss. As the number of users
grows, I think some of these policies will change.
Raghu.
Jakob Homan wrote:
Some more detailed information or, hopefully, some logs would be helpful
here. Have you verified that the namenode and datanodes are being
started correctly?
-Jakob
Turner Kunkel wrote:
Hello all,
I had 0.18.0 working and recently downloaded 0.20.0 and copied over the
information from .18 where I figured it should go.
However, the HDFS isn't working. I have JAVA_HOME in hadoop-env.sh set
correctly and I think I have core-site, hdfs-site, and mapred-site
correct.
All the SSH connections are fine and I have the masters and slaves files
set.
Is there anything I'm missing?
Thanks.
