Hi,
I m newbie on Hadoop and I want to prepare for a certification.
What is the best one Hortonworks or Cloudera Certification ?
Thank you in advance
Googled, but didnot find any sample code.
On Fri, Jan 22, 2016 at 9:50 AM, Rex X <dnsr...@gmail.com> wrote:
> The two SequentialTextFiles correspond to two Hive tables, say tableA and
> tableB below on
>
> hdfs://hive/tableA//MM/DD/*/part-0
> and
> hdfs:
gt;
> On 22 January 2016 at 06:30, Rex X <dnsr...@gmail.com> wrote:
>
>> The given sequential files correspond to an external Hive table.
>>
>> They are stored in
>> /tableName/part-0
>> /tableName/part-1
>> ...
>>
>> There are
The two SequentialTextFiles correspond to two Hive tables, say tableA and
tableB below on
hdfs://hive/tableA//MM/DD/*/part-0
and
hdfs://hive/tableB//MM/DD/*/part-0
Both of them are partitioned by date, for example,
hdfs://hive/tableA/2016/01/01/*/part-0
Now we
Hi Camusensei,
Thank you. That's very helpful!
Rex
On Thu, Jan 21, 2016 at 1:41 AM, Namikaze Minato <lloydsen...@gmail.com>
wrote:
> Hi Rex X,
>
> We are using the -outputFormat option of hadoop-streaming.
> Here is the detail: http://www.infoq.com/articles/HadoopOutput
The given sequential files correspond to an external Hive table.
They are stored in
/tableName/part-0
/tableName/part-1
...
There are about 2000 attributes in the table. Now I want to process the
data using Hadoop streaming and mapReduce. The first step is to find the
offset and length
/mapreduce/lib/output/MultipleOutputs.html>
> .
>
> Regards
> Rohit Sarewar
>
>
> On Thu, Jan 21, 2016 at 5:13 AM, Rex X <dnsr...@gmail.com> wrote:
>
>> Dear all,
>>
>> To be specific, for example, given
>>
>> hadoop jar hadoop-streaming.jar \
&g
Dear all,
To be specific, for example, given
hadoop jar hadoop-streaming.jar \
-input myInputDirs \
-output myOutputDir \
-mapper /bin/cat \
-reducer /usr/bin/wc
Where myInputDirs has a *dated* subfolder structure of
/input_dir//mm/dd/part-*
I want
Hello,
I had originally configured our dev cluster with SSH passwordless connectivity
to the datanodes, but had a passphrase. I have
updated with no passphrase, and have copied the new public key to all datanodes
updating their know_host files, and have tested
SSH with no passphrase from the
Hello,
Apache Hadoop 0.20.203.0
A colleague is using a SPARK shell on a remote host using HDFS protocol
attempting to run a job
on our Hadoop cluster, but the job errors out before finishing with the
following noted in the namenode log.
2014-06-11 16:13:24,958 WARN
Hi All,
Never mind. Found the errors of my ways. Did not ssh keys setup for localhost.
Thanks
-John
From: John Beaulaurier -X (jbeaulau - ADVANCED NETWORK INFORMATION INC at Cisco)
Sent: Thursday, November 08, 2012 10:01 AM
To: 'user@hadoop.apache.org'
Subject: start-dfs.sh requesting password
:9101
mentioned in the tutorial.
Jim
On Tue, Jan 25, 2011 at 12:04 AM, li ping li.j...@gmail.com wrote:
The exception java.io.IOException: NameNode is not formatted. indicated you
should format the NameNode first.
hadoop -fs namenode -format
On Tue, Jan 25, 2011 at 12:47 PM, Jim X jim.p
I am trying to install Hadoop by following the instruction from
http://alans.se/blog/2010/hadoop-hbase-cygwin-windows-7-x64/.
1. I can not open http://localhost:9100 or http://localhost:9101 after
I run bin/start-dfs.sh and bin/start-mapred.sh without any error
message being printed.
2. I
Can you please send me the solution for this exception.
I got a stack trace printed as below:
at org.apache.hadoop.util.RunJar.main(RunJar.java:90)
at org.apache.hadoop.mapred.JobShell.run(JobShell.java:54)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
Hey, I am trying to run a map reduce job and I get an exception. can
anyone give me a solution looking at the trace below :
=20
java.io.IOException: Error opening job jar: jar-on-local-fs
at org.apache.hadoop.util.RunJar.main(RunJar.java:91)
at
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