Solved.
It was a bug in Hadoop 020. There is a PATCH file available to fix this
bug in v0.20. The bug was definitively fixed in v0.21.
Sorry, I cannot post the exact link (I don't have access to the link
right now) but if anybody else has the same error, it should search the
Apache web site. The patch file can be semi-automatically applied using
the "patch" command.
:)
Dali Kilani wrote:
Can you double check that your data node doesn't have the same /etc/hosts
issue mentioned above in the thread? (i.e. machine name resolves to
127.0.0.1)
Dali
On Mon, Aug 17, 2009 at 1:33 PM, CubicDesign <cubicdes...@gmail.com> wrote:
Thank you all for your answers.
My problem with Hadoop on Ubuntu is that I cannot make the DataNode server
to work properly (at least this is where I think the error is). I get an
"File jobtracker.info could only be replicated to 0 nodes instead of 1"
error message. All other servers are running fine. I am running Hadoop in a
single (test) machine.
The results for jps and netstats are:
jps
4465 NameNode
4553 DataNode
5105 Jps
4717 JobTracker
4649 SecondaryNameNode
4807 TaskTracker
sudo netstat -plten | grep java
tcp 0 0 0.0.0.0:50722 0.0.0.0:* LISTEN
1000 13858 4553/java tcp 0 0
0.0.0.0:50020 0.0.0.0:* LISTEN 1000
15130 4553/java tcp 0 0 127.0.0.1:54310
0.0.0.0:* LISTEN 1000 13564 4465/java
tcp 0 0 127.0.0.1:54311 0.0.0.0:*
LISTEN 1000 14571 4717/java tcp 0 0
0.0.0.0:59080 0.0.0.0:* LISTEN 1000
14547 4717/java tcp 0 0 0.0.0.0:50090
0.0.0.0:* LISTEN 1000 14943 4649/java
tcp 0 0 127.0.0.1:40555 0.0.0.0:*
LISTEN 1000 15057 4807/java tcp 0 0
0.0.0.0:50060 0.0.0.0:* LISTEN 1000
15031 4807/java tcp 0 0 0.0.0.0:47661
0.0.0.0:* LISTEN 1000 14247 4649/java
tcp 0 0 0.0.0.0:50030 0.0.0.0:*
LISTEN 1000 14941 4717/java tcp 0 0
0.0.0.0:57839 0.0.0.0:* LISTEN 1000
13514 4465/java tcp 0 0 0.0.0.0:50070
0.0.0.0:* LISTEN 1000 14533 4465/java
tcp 0 0 0.0.0.0:50010 0.0.0.0:*
LISTEN 1000 14765 4553/java tcp 0 0
0.0.0.0:50075 0.0.0.0:* LISTEN 1000
14946 4553/java
