Recent questions tagged big-data

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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
 • 9,350 points • 47,437 views
0 votes
1 answer

How to find the used cache in HDFS

May 4, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,708 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 • 733 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 • 1,677 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 • 713 views
+1 vote
12 answers

How to check size of HDFS directory?

May 3, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 49,310 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 • 7,381 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 • 2,736 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 • 2,561 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 • 4,189 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 • 11,904 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 • 1,593 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 • 4,159 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 • 2,136 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 • 1,610 views
0 votes
1 answer

What is the function of getLocalCacheArchives method?

Apr 29, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,145 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 • 2,493 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 • 6,029 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 • 2,652 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 • 2,507 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 • 6,131 views
0 votes
1 answer

Which is better Neo4j or HBASE ?

Apr 26, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 948 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 • 1,405 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 • 961 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 • 2,310 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 • 4,735 views
0 votes
1 answer

GUI for using Hadoop

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,093 views
0 votes
1 answer

Namenode not getting started

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,290 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 • 1,904 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 • 1,190 views
0 votes
1 answer

What does count command in Hadoop tells?

Apr 23, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,025 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 • 1,791 views
0 votes
1 answer

Killing an Application from ResourceManager Web UI

Apr 23, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,118 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 • 1,173 views
0 votes
1 answer

Hadoop demo Code not working

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,002 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 • 1,511 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 • 853 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 • 1,245 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 • 1,765 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 • 11,886 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 • 714 views
0 votes
1 answer

Cassandra for datawarehouse

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,828 views
0 votes
1 answer

Difference between Hadoop file system and Linux

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 4,223 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 • 1,299 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 • 6,339 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 • 9,407 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 • 25,742 views
0 votes
1 answer

Getting error in Custom Input Format

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 784 views
0 votes
1 answer

Error in Hadoop Mapreduce

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,392 views
0 votes
1 answer

How Hadoop replication works?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,004 views
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