Recent questions tagged big-data

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1 answer

Getting error in Hadoop: Output file already exist

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 8,517 views
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1 answer

HDFS Location in Hadoop?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,073 views
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1 answer

How to print the content of a file in console present in HDFS?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,832 views
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1 answer

How to upload file to HDFS in Ubuntu

Apr 19, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,629 views
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1 answer

Hadoop for data migration

Apr 18, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,168 views
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1 answer

How can I use my host machine’s web browser to check my HDFS services running in the VM?

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,432 views
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1 answer

What are the different ways to load data from Hadoop to Azure Data Lake?

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,054 views
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2 answers

Hadoop is not able to find jps command

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 15,882 views
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1 answer

Why am I not able to see the Hadoop daemons that are running?

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,032 views
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2 answers

How can I list NameNode & DataNodes from any machine in the Hadoop cluster?

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 11,639 views
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1 answer

Not able to find HDFS directory on my system?

Apr 17, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 7,664 views
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1 answer

In which directory Hadoop should be installed?

Apr 17, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,421 views
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2 answers

How to exit NameNode safe mode?

Apr 17, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,959 views
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2 answers

Meaning of fs.defaultFS property in core-site.xml in hadoop

Apr 15, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 7,823 views
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2 answers

Function of “hadoop namenode -format” command

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 21,272 views
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1 answer

Is there a way to rebalance single Datanode in Hadoop.

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 752 views
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Moving files in Hadoop using the Java API?

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,672 views
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1 answer

Deleting a directory with comma throwing an error

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 508 views
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11 answers

What is the command to start Job history server in Hadoop 2.x & how to get its UI?

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 21,076 views
0 votes
1 answer

Best way of starting & stopping the Hadoop daemons with command line

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 10,066 views
0 votes
1 answer

Files for Configuring HDFS in Hadoop 2.2.0?

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 759 views
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2 answers

start-dfs.sh command is not starting Hadoop JobTracker & TaskTracker

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,836 views
0 votes
1 answer

Getting error in command hdfs dfs -mkdir

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,265 views
0 votes
1 answer

I am getting error while starting the Hadoop Daemons i.e. ResourceManger & NodeManager in Hadoop 3

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,658 views
0 votes
1 answer

How to migrate/ change Hadoop 1.x maven project to Hadoop 2.x?

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,053 views
0 votes
1 answer

What are the various ways to import files into HDFS?

Apr 13, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 3,579 views
0 votes
1 answer

How can we transfer a PDF file to HDFS?

Apr 13, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,187 views
0 votes
1 answer

How to move data from Oracle database to Hadoop?

Apr 12, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 7,302 views
0 votes
1 answer

What is the difference between a zero reducer and identity reducer in Hadoop Mapreduce?

Apr 10, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,546 views
0 votes
5 answers

What is the HDFS command to list all the files in HDFS according to the timestamp?

Apr 10, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 74,061 views
0 votes
3 answers

Cloudera Hadoop - Daemons not running

Apr 6, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,733 views
0 votes
1 answer

Writing File into HDFS using spark scala

Apr 6, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 17,336 views
0 votes
1 answer

Apache Hadoop Yarn example program

Apr 4, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,197 views
0 votes
1 answer

Hadoop: TaskTracker and JobTracker don't start with start-dfs.sh

Apr 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,536 views
0 votes
1 answer

When is an identity mapper/reducer used?

Apr 3, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,213 views
0 votes
1 answer

What is the benefit of using CDH over other Distributors?

Mar 29, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 655 views
0 votes
1 answer

Is there a good online tutorial for Hadoop development on a Windows 7 machine?

Mar 29, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 691 views
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1 answer

Hdfs Service Systemd - startup

Mar 29, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,945 views
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11 answers

What is the default Namenode port of HDFS. Is it 8020 or 9000 or 50070?

Mar 29, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 62,888 views
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1 answer

hadoop: command not found

Mar 28, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 14,581 views
0 votes
1 answer

What is Hadoop Distribution ?

Mar 27, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 948 views
0 votes
1 answer

Moving data to hdfs using copyFromLocal command

Mar 27, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 10,151 views
0 votes
1 answer

Copy file from HDFS to the local file system

Mar 27, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 17,105 views
0 votes
1 answer

What is hadoop.tmp.dir ?

Mar 26, 2018 in Big Data Hadoop by DareDev
 • 6,890 points • 6,948 views
0 votes
1 answer

Relationship between Spark, Hadoop and Cassandra?

Mar 26, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,516 views
+1 vote
1 answer

Where to set hadoop.tmp.dir? core-site.xml or hdfs-site.xml?

Mar 26, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 9,006 views
0 votes
3 answers

Can we run Spark without using Hadoop?

Mar 23, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,318 views
0 votes
1 answer

Access DFS through Java API

Mar 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,927 views
0 votes
1 answer

How to integrate Hadoop with Elasticsearch?

Mar 22, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,595 views
+11 votes
11 answers

Hadoop “Unable to load native-hadoop library for your platform” warning

Mar 22, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 71,937 views
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