Hi
Did you check your slaves file is correct ?
That the datanode process is actually running ?
Did you check its log file ?
That the datanode is available ? (dfsadmin -report, through the WUI)
We need more detail
Ulul
Le 28/02/2015 22:05, Daniel Klinger a écrit :
Thanks but i know how to kill a process in Linux. But this didn’t answer the
question why the command say no Datanode to stop instead of stopping the
Datanode:
$HADOOP_PREFIX/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script hdfs stop datanode
*Von:*Surbhi Gupta [mailto:[email protected]]
*Gesendet:* Samstag, 28. Februar 2015 20:16
*An:* [email protected]
*Betreff:* Re: Hadoop 2.6.0 - No DataNode to stop
Issue jps and get the process id or
Try to get the process id of datanode.
Issue ps-fu userid of the user through which datanode is running.
Then kill the process using kill -9
On 28 Feb 2015 09:38, "Daniel Klinger" <[email protected]
<mailto:[email protected]>> wrote:
Hello,
I used a lot of Hadoop-Distributions. Now I’m trying to install a
pure Hadoop on a little „cluster“ for testing (2 CentOS-VMs: 1
Name+DataNode 1 DataNode). I followed the instructions on the
Documentation site:
http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/ClusterSetup.html.
I’m starting the Cluster like it is described in the Chapter
„Operating the Hadoop Cluster“(with different users). The starting
process works great. The PID-Files are created in /var/run and u
can see that Folders and Files are created in the Data- and
NameNode folders. I’m getting no errors in the log-files.
When I try to stop the cluster all Services are stopped (NameNode,
ResourceManager etc.). But when I stop the DataNodes I’m getting
the message: „No DataNode to stop“. The PID-File and the
in_use.lock-File are still there and if I try to start the
DataNode again I’m getting the error that the Process is already
running. When I stop the DataNode as hdfs instead of root the PID
and in_use-File are removed but I’m still getting the message: „No
DataNode to stop“
What I’m doing wrong?
Greets
dk
