Recent questions tagged hadoop

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1 answer

Does setup & clean methods in Hadoop MapReduce is executed after each task?

May 8, 2018 in Big Data Hadoop by king_of_code
 • 1,977 views
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1 answer

Cannot connect to Hive from MicroStrategy BI tool

May 8, 2018 in Big Data Hadoop by mac113
 • 1,011 views
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1 answer

Where does HDFS stores data on the local file system?

May 8, 2018 in Big Data Hadoop by code799
 • 15,769 views
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Why Apache Pig is used instead of Hadoop?

May 8, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,175 views
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1 answer

ApplicationMaster in YARN Architecture

May 8, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 1,058 views
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1 answer

How is Apache Spark different from the Hadoop approach?

May 7, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 991 views
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1 answer

How to delete a directory from Hadoop cluster which is having comma(,) in its name?

May 7, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,802 views
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1 answer

Can we use HDFS to store git repositories?

May 7, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,206 views
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1 answer

What is the default location of Hadoop log files & how can I change that location?

May 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 20,582 views
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1 answer

Submitting MapReduce job using jobConf object vs job object

May 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,668 views
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1 answer

Which Data Structure is used in case of Map Reduce?

May 4, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,292 views
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9 answers

Is there any way to check which Hadoop daemons are running?

May 4, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 45,425 views
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1 answer

How to find the used cache in HDFS

May 4, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 2,057 views
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1 answer

Could not find the Sqoop directory in HDP 2.2

May 4, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 1,293 views
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1 answer

What happend while formatting hadoop namenode?

May 4, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 420 views
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1 answer

Setting the Number of Map tasks and Reduce Tasks not Working

May 4, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 1,239 views
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1 answer

Where Big Data tools like Hadoop and Spark comes into picture when we talk about ETL?

May 3, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 419 views
+1 vote
12 answers

How to check size of HDFS directory?

May 3, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 46,076 views
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1 answer

After installing Hadoop on Windows7, NameNode failed to start

May 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 6,739 views
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1 answer

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

May 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,254 views
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1 answer

Hadoop job getting executed in local mode only?

May 3, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 2,131 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 • 3,701 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
 • 9,390 points • 10,821 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 • 1,288 views
0 votes
1 answer

NodeManager is not able to connect to the ResourceManager.

May 1, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 3,465 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 • 1,821 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 • 1,121 views
0 votes
1 answer

What is the function of getLocalCacheArchives method?

Apr 29, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 547 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
 • 2,080 points • 1,872 views
0 votes
1 answer

What is the command to navigate in HDFS?

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 5,228 views
0 votes
1 answer

How can I write text in HDFS using CMD?

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 1,800 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
 • 2,080 points • 2,014 views
+1 vote
2 answers

What does hadoop fs -du command gives as output?

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 5,503 views
0 votes
1 answer

Which is better Neo4j or HBASE ?

Apr 26, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 585 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 • 1,020 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 • 575 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 • 1,581 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 • 4,094 views
0 votes
1 answer

GUI for using Hadoop

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,739 views
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1 answer

Namenode not getting started

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,011 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 • 1,480 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 • 620 views
0 votes
1 answer

What does count command in Hadoop tells?

Apr 23, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,500 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 • 1,530 views
0 votes
1 answer

Killing an Application from ResourceManager Web UI

Apr 23, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,478 views
0 votes
1 answer

Are some Pig real time use cases available?

Apr 21, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 674 views
0 votes
1 answer

Hadoop demo Code not working

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 624 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 • 1,175 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 • 581 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 • 732 views
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