Recent questions tagged hadoop

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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 • 3,826 views
0 votes
2 answers

Command to check the Hadoop distribution as well as it’s version which is installed in my cluster

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 5,544 views
0 votes
1 answer

Getting error in command hdfs dfs -mkdir

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,259 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 • 3,650 views
0 votes
1 answer

Why Java Code in Hadoop uses own Data Types instead of basic Data types?

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,155 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 • 1,037 views
0 votes
1 answer

Why ResourceManager crashes after sometime or while accessing HDFS in Hadoop 2.8.1 and Ubuntu 16.04?

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,430 views
0 votes
1 answer

How do I connect my Spark based HDInsight cluster to my blob storage?

Apr 15, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,094 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 • 3,569 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 • 1,179 views
0 votes
1 answer

What are SUCCESS and part-r-00000 files in Hadoop?

Apr 12, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 12,527 views
0 votes
1 answer

Is there any way to increase Java Heap size in Hadoop?

Apr 12, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 4,956 views
0 votes
12 answers

What is Zookeeper? What is the purpose of Zookeeper in Hadoop Ecosystem?

Apr 12, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 29,844 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 • 7,295 views
0 votes
1 answer

Is Hadoop a good open-source project to join?

Apr 12, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 723 views
0 votes
1 answer

Is java necessary for Hadoop?

Apr 11, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 716 views
0 votes
1 answer

How do I parse pdf file using MapReduce?

Apr 11, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,628 views
+1 vote
2 answers

How to authenticate username & password while using Connector for Cloudera Hadoop in Tableau?

Apr 11, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,671 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 • 2,531 views
0 votes
1 answer

What is a importance of Hive ODBC Connector

Apr 10, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 855 views
0 votes
1 answer

Difference between Application Master and Application Manager?

Apr 10, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 14,600 views
0 votes
1 answer

Is there any way to load data from MySql to HDFS?

Apr 10, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,627 views
0 votes
1 answer

What are the hardware requirements for installing Hadoop on my Laptop?

Apr 10, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 8,062 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 • 73,937 views
0 votes
1 answer

How to use custom FileInputFormat in MapReduce?

Apr 10, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,207 views
0 votes
1 answer

How do I include all the Hadoop dependencies using Maven?

Apr 10, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 6,489 views
0 votes
1 answer

Can one implement combiner and reducer separately?

Apr 10, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,085 views
0 votes
2 answers

What is a container in YARN?

Apr 10, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 6,768 views
0 votes
1 answer

IDE for writing and running hadoop jobs?

Apr 10, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,870 views
0 votes
1 answer

How do I print hadoop properties in command line?

Apr 6, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,801 views
0 votes
3 answers

Cloudera Hadoop - Daemons not running

Apr 6, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,722 views
0 votes
1 answer

How to find hadoop distribution and version?

Apr 6, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,004 views
0 votes
1 answer

How to configure secondary namenode in Hadoop 2.x ?

Apr 6, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,807 views
0 votes
1 answer

RDBMS Vs Hadoop

Apr 6, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 842 views
0 votes
1 answer

Different ports in a Hadoop cluster environment?

Apr 6, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,865 views
0 votes
1 answer

How to get started with Hadoop and do some development using Eclipse IDE?

Apr 4, 2018 in Big Data Hadoop by Damon Salvatore
 • 5,980 points • 2,116 views
0 votes
1 answer

How to retrieve the list of sql (Hive QL) commands that has been executed in a hadoop cluster?

Apr 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 14,362 views
0 votes
1 answer

Avro - Getting Started

Apr 4, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 641 views
0 votes
1 answer

Apache Hadoop Yarn example program

Apr 4, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,185 views
0 votes
1 answer

Will hadoop replace data warehousing?

Apr 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 636 views
0 votes
1 answer

Examples of real world big data open source applications

Apr 4, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,198 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 • 1,525 views
0 votes
1 answer

When hadoop-env.sh will be executed in hadoop

Apr 3, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,241 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 • 2,206 views
0 votes
1 answer

What Distributed Cache is actually used for in Hadoop?

Apr 3, 2018 in Big Data Hadoop by Damon Salvatore
 • 5,980 points • 2,145 views
0 votes
1 answer

Where is Hadoop Classpath?

Apr 2, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 4,521 views
0 votes
1 answer

What's the difference between Hadoop and NoSQL ?

Apr 2, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 6,666 views
0 votes
1 answer

How hadoop mapreduce job is submitted to worker nodes?

Mar 30, 2018 in Big Data Hadoop by Damon Salvatore
 • 5,980 points • 5,632 views
0 votes
1 answer

How to start working on Hadoop?

Mar 30, 2018 in Big Data Hadoop by Damon Salvatore
 • 5,980 points • 959 views
0 votes
1 answer

Not able to start Job History Server in Hadoop 2.8.1

Mar 30, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,572 views
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