Recent questions tagged big-data

+1 vote
12 answers

How to check size of HDFS directory?

May 3, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 53,269 views
0 votes
1 answer

After installing Hadoop on Windows7, NameNode failed to start

May 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 8,081 views
0 votes
1 answer

Hadoop giving java.io.IOException, in mkdir Java code.

May 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,687 views
0 votes
1 answer

Hadoop job getting executed in local mode only?

May 3, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 3,275 views
0 votes
1 answer

Error while copying the file from local to HDFS

May 3, 2018 in Big Data Hadoop by Damon Salvatore
 • 5,980 points • 5,072 views
0 votes
1 answer

How to extract only few lines of data from HDFS?

May 2, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 13,192 views
0 votes
1 answer

How Sqoop and Tera Data Connector for Hadoop differ from each other?

May 2, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,223 views
0 votes
1 answer

NodeManager is not able to connect to the ResourceManager.

May 1, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 5,097 views
0 votes
1 answer

What are some of the famous visualization tools which can be integrated with Hadoop & Hive?

May 1, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,837 views
0 votes
1 answer

Why is Spark faster than Hadoop Map Reduce

Apr 30, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 2,338 views
0 votes
1 answer

What is the function of getLocalCacheArchives method?

Apr 29, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,769 views
0 votes
1 answer

What is the command to find the free space in HDFS?

Apr 29, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,515 views
0 votes
1 answer

What is the command to navigate in HDFS?

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 6,961 views
0 votes
1 answer

How can I write text in HDFS using CMD?

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,631 views
0 votes
1 answer

Changing hostname in fs.default.name property puts Hadoop in safemode

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,329 views
+1 vote
2 answers

What does hadoop fs -du command gives as output?

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 7,504 views
0 votes
1 answer

Which is better Neo4j or HBASE ?

Apr 26, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,614 views
+1 vote
1 answer

Why is jar file required to execute a MR code instead of class file?

Apr 24, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,004 views
0 votes
1 answer

How to perform Near-real time analytics using Hadoop?

Apr 24, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,754 views
0 votes
1 answer

How do we authenticate user from http.signature.secret file?

Apr 24, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 3,237 views
0 votes
1 answer

What is the slaves file configuration in Hadoop?

Apr 24, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,675 views
0 votes
1 answer

GUI for using Hadoop

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,671 views
0 votes
1 answer

Namenode not getting started

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,931 views
0 votes
1 answer

How to transfer data from Netezza to HDFS using Apache Sqoop?

Apr 23, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,700 views
0 votes
1 answer

How to checkout Hadoop 2.6.0 from git

Apr 23, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,893 views
0 votes
1 answer

What does count command in Hadoop tells?

Apr 23, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,773 views
0 votes
1 answer

What is the $HIVE_HOME in Hortonworks sandbox

Apr 23, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,401 views
0 votes
1 answer

Killing an Application from ResourceManager Web UI

Apr 23, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,118 views
0 votes
0 answers

Are some Pig real time use cases available?

Apr 21, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,723 views
0 votes
1 answer

Hadoop demo Code not working

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,700 views
0 votes
1 answer

How to work with distributed cache in Hadoop?

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,353 views
0 votes
1 answer

When was the first version of Hadoop released?

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,392 views
0 votes
1 answer

How to implement data locality in Hadoop MapReduce?

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,889 views
0 votes
1 answer

How to import data to HBase from SQL server?

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,425 views
+1 vote
1 answer

Why minimum 3 Journal Nodes are required in Hadoop HA architecture?

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 12,900 views
0 votes
1 answer

Declaring separator in the MapReduce(Hadoop 0.20)

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,368 views
0 votes
1 answer

Cassandra for datawarehouse

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,634 views
0 votes
1 answer

Difference between Hadoop file system and Linux

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 5,209 views
0 votes
1 answer

HortonWorks Hadoop encryption tools and data security

Apr 20, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,037 views
+1 vote
2 answers

Hadoop 3 compatibility with older versions of Hive, Pig, Sqoop and Spark

Apr 20, 2018 in Apache Spark by Shubham
 • 13,490 points • 7,962 views
0 votes
1 answer

How to find Hadoop version in CDH?

Apr 19, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 10,429 views
0 votes
2 answers

hadoop copy a local file system folder to HDFS

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 27,068 views
0 votes
1 answer

Getting error in Custom Input Format

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,389 views
0 votes
1 answer

Error in Hadoop Mapreduce

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,028 views
0 votes
1 answer

How Hadoop replication works?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,650 views
0 votes
1 answer

Getting error in Hadoop: Output file already exist

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 10,989 views
0 votes
1 answer

HDFS Location in Hadoop?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,836 views
0 votes
2 answers

Download & Install Cloudera parcels without being connected to internet?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,806 views
0 votes
1 answer

Installing Hive & Hadoop in VM

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,629 views
0 votes
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 • 7,037 views
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