Latest questions in Big Data Hadoop

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What are the options for hadoop on scala?

Definitely check out Scalding. Speaking as a user ...READ MORE

Aug 22, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 459 views
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1 answer

What are the problems in creating volume in mapr hadoop?

It sounds like the user you are ...READ MORE

Aug 22, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 821 views
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How hadoop command works with javac?

Javac is used for compiling your java ...READ MORE

Aug 17, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,230 views
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1 answer

What is the difference between hadoop-1.2.1.bin.tar.gz and hadoop-1.2.1.tar.gz files?

As the name of the file in ...READ MORE

Aug 17, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,303 views
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1 answer

Where are Hadoop's task log files stored?

You can easily find these log files ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,446 views
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How Hadoop distributes block writes into HDFS?

So, what happens is the slave node ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 394 views
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How will the Fair Scheduler handle more than one Job?

In your case when job B gets ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 612 views
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1 answer

Determining HDFS space in a cluster?

There are two ways to determine available ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 574 views
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1 answer

How to calculate number of slave nodes?

Total number of slave nodes in your ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,026 views
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1 answer

Determining number of reduces?

Number of reduces are set by the ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 350 views
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How does Hadoop's block replacement policy work?

In your case, One copy of the ...READ MORE

Aug 16, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,025 views
0 votes
1 answer

What is the difference between local file system commands touch and touchz?

Actually they both do the same except touchz is ...READ MORE

Aug 14, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 2,158 views
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1 answer

Can I have a list of property files used in Hadoop Framework?

Here is a complete list of configuration ...READ MORE

Aug 14, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 634 views
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How do I get connected to Hadoop and Geo Spatial connector?

There are a number of free and ...READ MORE

Aug 14, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,683 views
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Want to have an idea on Hadoop Machine Learning and Data Mining project.

You haven't written anything about your interest. ...READ MORE

Aug 14, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,093 views
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2 answers

Which of these will vanish: Flink vs Spark?

At first glance, Flink and Spark would ...READ MORE

Aug 13, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,031 views
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2 answers

Which framework allows random, realtime read/write access to hundreds of terabytes of data?

For this type of case you can ...READ MORE

Aug 14, 2018 in Big Data Hadoop by anonymous
 • 2,078 views
+3 votes
1 answer

Apache Nifi Execute Process Processor

Hey soujanyabargavi!  NO, ExecuteProcess does not allow incoming ...READ MORE

Sep 20, 2018 in Big Data Hadoop by Omkar
 • 69,230 points • 3,708 views
0 votes
1 answer

How to count lines in a file on hdfs command?

Use the below commands: Total number of files: hadoop ...READ MORE

Aug 10, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 27,252 views
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1 answer

What is the difference between a Big Data Warehouse and a traditional Data Warehouse

Hadoop is similar in architecture to MPP data ...READ MORE

Aug 10, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 511 views
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1 answer

What is the difference between a Big Data Warehouse and a traditional Data Warehouse?

Hadoop is similar in architecture to MPP data ...READ MORE

Aug 10, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,183 views
0 votes
1 answer

How to Install Cloudera Manager into my Virtual Machine ?

Before you start anything, First make sure ...READ MORE

Aug 9, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,569 views
0 votes
1 answer

How to extract Cloudera Hadoop VM archive?

If you are Windows, you need to ...READ MORE

Aug 9, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 792 views
0 votes
1 answer

When a reduce class also serve as a combiner?

It will act as a combiner when ...READ MORE

Aug 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 520 views
0 votes
1 answer

Storing collection of images in HDFS

Using Hadoop Sequence Files, you can store ...READ MORE

Aug 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 993 views
0 votes
1 answer

Operation to simulate a Hadoop Production Cluster

In this case, what you can do ...READ MORE

Aug 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 646 views
0 votes
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Determining how many mappers will run?

Here what happens is, each file would ...READ MORE

Aug 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,271 views
0 votes
1 answer

Example or Use Case of Big Data

Let me answer your questions one by ...READ MORE

Aug 9, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 700 views
0 votes
1 answer

How to assess and compare Hadoop for Business Intelligence?

Hadoop is a great tool to be ...READ MORE

Aug 8, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 431 views
0 votes
1 answer

How to run Map Reduce program using Ubuntu terminal?

 I used the following steps to execute it ...READ MORE

Aug 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,662 views
0 votes
1 answer

I get an error stating- Hadoop: «ERROR : JAVA_HOME is not set». How to resolve this?

Make sure that you have removed the ...READ MORE

Aug 7, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 5,247 views
0 votes
1 answer

How should I connect Hadoop in C#?

The Uri should be your Cluster Name, ...READ MORE

Aug 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,638 views
0 votes
2 answers

How does Hadoop/Spark is used for building large analytics report?

The best possible framework for this task ...READ MORE

Aug 7, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 599 views
0 votes
1 answer

Increasing HFile block size

If you increase the block size then ...READ MORE

Aug 6, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 710 views
0 votes
1 answer

Designing Schema in HBase

Just create a single table with two ...READ MORE

Aug 6, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 628 views
0 votes
1 answer

What are the security guidelines for Impala?

Security Guidelines for Impala: The following are the ...READ MORE

Aug 6, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 518 views
0 votes
1 answer

Cloudera Managing and Compatibality

With more partners than any other Hadoop ...READ MORE

Aug 6, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 385 views
0 votes
1 answer

What are the different ways of Installing Hadoop into our local machine?

Hadoop runs on Unix and on Windows. ...READ MORE

Aug 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,698 views
0 votes
1 answer

Which is the most preferable language for Hadooop Map-Reduce programs?

MapReduce is a programming model to perform ...READ MORE

Aug 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,311 views
0 votes
1 answer

Is there any way to make Apache Commons Math Library available to MapReducer job at runtime?

So, what you can do is when ...READ MORE

Aug 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 957 views
0 votes
1 answer

Reading the file and populating the associative array

You can use the configure method to ...READ MORE

Aug 2, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 949 views
0 votes
1 answer

What happens in a MapReduce job when you set the number of reducers to one?

If you set number of reducers as ...READ MORE

Jul 31, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,845 views
0 votes
1 answer

HDFS for customer information file

No, because HDFS is optimized for write-once, ...READ MORE

Jul 31, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 442 views
0 votes
1 answer

How a client reads a file from HDFS?

Let me explain you it briefly. So, ...READ MORE

Jul 31, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,356 views
0 votes
1 answer

Mappers in Hadoop

The number of mappers is determined by ...READ MORE

Jul 31, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 331 views
0 votes
1 answer

Backup and Checkpoint Node

Checkpoint Node keeps track of the latest ...READ MORE

Jul 31, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 2,523 views
0 votes
1 answer

Checkpoint Node in Hadoop

Checkpoint Node keeps track of the latest ...READ MORE

Jul 31, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,193 views
0 votes
1 answer

Block Scanner HDFS

Block scanner runs periodically on every DataNode ...READ MORE

Jul 31, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 2,220 views
0 votes
1 answer

Passing keys and values to the reducers during a standard sort and shuffle phase of MapReduce

Let me explain you the whole scenario Reducer ...READ MORE

Jul 27, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,162 views
0 votes
1 answer

Hortonworks vs Cloudera Architecture Difference

Features Cloudera MapR HortonWorks License Commercial Commercial Open-Source Community Yes Yes Yes SQL Impala Hive, Drill, Shark Stinger MapReduce Yes Yes Yes Unique Features Cloudera Manager Direct Access NFS 100% ...READ MORE

Jul 27, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 681 views
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