I am trying hadoop-1.2.1 on FreeBSD-10 (installed from ports).
I see the following exception in datanode and tasktracker's log:
2014-06-29 10:13:17,105 INFO org.apache.hadoop.util.NativeCodeLoader: Loaded
the native-hadoop library
2014-06-29 10:13:17,106 ERROR
HI Vinod,
Thanks for your support. I¹m packaging my application in Eclipse (Kepler) as
a runnable jar. I can get the application to debug there in local mode.
The command line I am using for my app is:
/usr/local/hadoop-2.4.0/jar_files $ hadoop jar
It is the part about implementing the tool interface that is the issue.
Does your driver class implement Tool?
Chris
On Jun 29, 2014 8:22 AM, Chris MacKenzie
stu...@chrismackenziephotography.co.uk wrote:
HI Vinod,
Thanks for your support. I’m packaging my application in Eclipse (Kepler)
as a
I am wondering is there a documented specification of what each line of the
output log represents.
Freddy Chua
But how is it different from normal execution and parallel MR.
Although mapreduce is a parallel exec framework where the data into map is
a single input.
If the Whole fileinput is jst an entire input split insead of the entire
input file . it will be useful right?
if it is the whole file it can
Try reading this blog here, I think it's a pretty good overview.
*http://hadoopi.wordpress.com/2013/05/27/understand-recordreader-inputsplit/
http://hadoopi.wordpress.com/2013/05/27/understand-recordreader-inputsplit/*
If you set a whole file's contents to be either the key or the value in the
I think it will be easier if you give your use case. You really would load the
file if you don't want it to split but there are many ways to solve the issue
and that's why understanding the use case is helpful.
Sent from my iPhone
On Jun 29, 2014, at 9:28 AM, unmesha sreeveni
how do long lived services such as the namenode or yarn resourcemanager
deal with kerberos ticket expiration for the user that runs the service?
do they periodically renew/refresh their tickets by calling
SecurityUtil.login(conf, keytab, user, host)?
where can i find an example the code that
Hi Koert,
I don’t have an example. However, perhaps class
org.apache.hadoop.security.UserGroupInformation has what you need. Some
relevant methods are:
reloginFromKeytab()
reloginFromTicketCache()
loginUserFromKeytab(String user, String path)
Geoff
On Jun 29, 2014, at 5:50 PM, Koert Kuipers
thanks! it makes sense to use loginUserFromKeytab initially and then
checkTGTAndReloginFromKeytab or reloginFromKeytab periodically. i will try
to find the usage of these in the code for the services such as namenode (a
quick grep doesnt show these relogin functions being called...)
On Sun, Jun
I run hadoop-mapreduce-examples-2.2.0.jar,it can get correct result,but it
raise error exitCode: 1 due to: Exception from container-launch. Why? How to
solve it? Thanks.
[yarn@localhost sbin]$ hadoop jar
/opt/yarn/hadoop-2.2.0/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar
pi
I am trying to do DBScan Algo.I refered the algo in Data Mining - Concepts
and Techniques (3rd Ed) chapter 10 Page no: 474.
Here in this algorithmwe need to find the disance between each point.
say my sample input is
5,6
8,2
4,5
4,6
So in DBScan we have to pic 1 elemnt and then find the distance
My cluser version hdfs 2.2 stable ( 2 ha namenodes, 10 datanodes)
I was command bin/hdfs dfs -setrep -R 2 / ( replication 1 to 2 )
I found that HDFS is actually replicating the under replicated blocks but it
works very slowly.
HDFS performs the replication about 1 block per second.
I have
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