...@yahoo.com wrote:
Is that all the messages in the datanode log? Do you see any SHUTDOWN
message also?
-Bharath
From: Panayotis Antonopoulos antonopoulos...@hotmail.com
To: common-user@hadoop.apache.org
Sent: Thursday, May 12, 2011 6:07 PM
To: common-user@hadoop.apache.org
When you say freeze you mean there is nothing rolling in the log?
Sent from my iPhone
On May 13, 2011, at 2:28 AM, Panayotis Antonopoulos
antonopoulos...@hotmail.com wrote:
There is no shutdown message until I shutdown the DataNode.
I used
doesn't start but there is no exception in the log
To: common-user@hadoop.apache.org
Hello Panayotis,
Could you please post a jstack output of your hung process to look into?
$ jstack PID of DN # will do.
2011/5/13 Panayotis Antonopoulos antonopoulos...@hotmail.com:
There is no other
-user@hadoop.apache.org
Actually, only the last mentioned stack matters. Also see:
https://issues.apache.org/jira/browse/HDFS-1835
On Fri, May 13, 2011 at 11:15 PM, Harsh J ha...@cloudera.com wrote:
Hey,
2011/5/13 Panayotis Antonopoulos antonopoulos...@hotmail.com:
899599744@qtp
I am using the cluster of the Lab of my university, so I have limited access to
its settings.
It consists of 10 nodes with Intel Xeon CPUs and GNU/Linux 2.6.38
Is there a way to solve the problem without changing the settings of the
cluster?
I am trying to use the patch that Harsh J sent me
I installed the patch:
https://issues.apache.org/jira/browse/HDFS-1835
that Harsh J told me and now everything works great!!!
I hope that this change won't create other problems.
Thanks to everyone and especially to Harsh J!!
I would never find the problem without your help!!
From:
Hello,
I am writing a MR job where the distribution of the Keys emitted by the Map
phase is not known beforehand and so I can't create the partitions for the
TotalOrderPartitioner. I would like to sample those keys to create the
partitions and then run the job that will process the whole
Hello,
I am trying to set up Hadoop HDFS in a cluster for the first time. So far I was
using pseudo-distributed mode on my PC at home and everything was working
perfectly.
Tha NameNode starts but the DataNode doesn't start and the log contains the
following:
2011-05-13 04:01:13,663 INFO
Hello,
I am a beginner and I have downloaded Hadoop 0.20.2.
I would like to make some changes in some of the classes of Hadoop and import
them into hadoop-0.20.2-core.jar so that they are visible to the mapreduce
programs.
What is the best way to do this?
What should I do if I find the changes
Hello,
Let' say we have a MR job that uses ChainMapper and ChainReducer like in the
following diagram:
Input-Map1-Map2-Reduce-Map3-Output
The input is split and distributed to the nodes of the cluster before being
processed by Map1 phase.
Also, before the Reduce phase the key/value pairs are
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