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 wrote:
> 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//
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 wa
have any information about your data.
>
> I don't think we can help you with this. Also, I cannot understand what
> you are trying to achieve. Please also tell us why you are using hadoop
> streaming instead of hive to do your operations.
>
> Regards,
> LLoyd
>
> O
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 fo
Hi Camusensei,
Thank you. That's very helpful!
Rex
On Thu, Jan 21, 2016 at 1:41 AM, Namikaze Minato
wrote:
> Hi Rex X,
>
> We are using the -outputFormat option of hadoop-streaming.
> Here is the detail: http://www.infoq.com/articles/HadoopOutputFormat
>
> Regards,
t;
> .
>
> Regards
> Rohit Sarewar
>
>
> On Thu, Jan 21, 2016 at 5:13 AM, Rex X wrote:
>
>> Dear all,
>>
>> To be specific, for example, given
>>
>> hadoop jar hadoop-streaming.jar \
>> -input myInputDirs \
>> -output
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 myOutp
Please disregard. Issue resolved.
-John
From: John Beaulaurier -X (jbeaulau - ADVANCED NETWORK INFORMATION INC at Cisco)
Sent: Wednesday, November 26, 2014 9:34 AM
To: user@hadoop.apache.org
Subject: SSH passwordless & Hadoop starup/shutdown scripts
Hello,
I had originally configured our
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 nam
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
org.apache.hadoop.se
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 requestin
Hello,
Apache Hadoop 0.20.203.0 (tarball)
Java HotSpot (build 1.6.0_21-b07)
I have a 4 datanode cluster sandbox I'm trying to startup, but when I initiate
start.dfs.sh as the local user I created, , and after the namenode and all the
datanodes
start, the output stops and asks for the password f
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