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 • 51,930 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 • 7,826 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 • 3,274 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 • 2,928 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 • 4,717 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 • 12,683 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 • 2,005 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 • 4,733 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 • 2,597 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 • 2,070 views
0 votes
1 answer

What is the function of getLocalCacheArchives method?

Apr 29, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,537 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 • 3,059 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 • 6,547 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 • 3,219 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 • 3,025 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 • 6,955 views
0 votes
1 answer

Which is better Neo4j or HBASE ?

Apr 26, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,376 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 • 1,778 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 • 1,438 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 • 2,899 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 • 5,271 views
0 votes
1 answer

GUI for using Hadoop

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,451 views
0 votes
1 answer

Namenode not getting started

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,696 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 • 2,376 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 • 1,662 views
0 votes
1 answer

What does count command in Hadoop tells?

Apr 23, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,475 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 • 2,208 views
0 votes
1 answer

Killing an Application from ResourceManager Web UI

Apr 23, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,659 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 • 1,534 views
0 votes
1 answer

Hadoop demo Code not working

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,407 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 • 1,949 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 • 1,193 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 • 1,654 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 • 2,177 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 • 12,460 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 • 1,154 views
0 votes
1 answer

Cassandra for datawarehouse

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,340 views
0 votes
1 answer

Difference between Hadoop file system and Linux

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 4,896 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 • 1,716 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 • 7,317 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 • 10,083 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 • 26,587 views
0 votes
1 answer

Getting error in Custom Input Format

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,155 views
0 votes
1 answer

Error in Hadoop Mapreduce

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,771 views
0 votes
1 answer

How Hadoop replication works?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,381 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 • 9,788 views
0 votes
1 answer

HDFS Location in Hadoop?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,617 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 • 2,508 views
0 votes
1 answer

Installing Hive & Hadoop in VM

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,357 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 • 6,732 views
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