Hi Steve, I think I was able to reproduce your problem over the weekend
(not sure though, it may be a different problem). In my case it was that
the mappers were timing out during the merge phase. I also think the
related tickets are
Hello everyone,
I have 3 server(1 master, 2 slave) and I installed cdh3u2 on each
server. I execute simple wordcount example but reducer had a
NullPointerException. How can i solve this problem?
The error log is that:
Error: java.lang.NullPointerException
at
Hey guys,
How can I configure HDFS so that internally I can set permissions on the
data.
I know there is a parameter called dfs.permissions that needs to be true,
otherwise permissions won't work.
Actually I had set it true previously, so that any user can use the HDFS
data to run jobs on it.
