Trending questions in Big Data Hadoop

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Importing a portion of Relational Database to HDFS

Yes, there is a tool called Sqoop ...READ MORE

Jul 20, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,056 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 • 969 views
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1 answer

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 • 754 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 • 744 views
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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 • 1,341 views
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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 • 1,053 views
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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
 • 9,350 points • 1,408 views
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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 • 1,123 views
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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 • 1,022 views
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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 • 983 views
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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 • 1,214 views
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1 answer

Hadoop Installation Issue on Windows

Below is the main error you are ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 6,739 views
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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 • 914 views
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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
 • 9,350 points • 994 views
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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 • 964 views
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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
 • 9,350 points • 883 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 • 791 views
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1 answer

How to create a project for the first time in Hadoop.?

If you want to learn Hadoop framework ...READ MORE

Jul 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,386 views
+1 vote
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How to set up Hadoop cluster on Mac in intelliJ IDEA

I have Installed hadoop using brew and ...READ MORE

Jul 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,401 views
0 votes
1 answer

How can Hadoop discover missing or corrupt HDFS data?

HDFS supports fsck command to check for ...READ MORE

Jul 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,547 views
0 votes
1 answer

When do reduce tasks start in Hadoop?

The reduce phase has 3 steps: shuffle, ...READ MORE

Jul 27, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,186 views
0 votes
1 answer

Is there any way to access Hadoop web UI in linux?

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

May 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,505 views
0 votes
1 answer

Synchronizing sqoop imported data in HDFS

Data can be synchronised using incremental parameter ...READ MORE

Jul 19, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,438 views
0 votes
1 answer

Sqoop Metastore ?

Sqoop metastore is a shared metadata repository ...READ MORE

Jul 19, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,410 views
0 votes
1 answer

Hadoop Nodes for Multiple Disks

Datanodes can store blocks in multiple directories ...READ MORE

Jul 3, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,092 views
+1 vote
1 answer

Reading Performance in Hadoop Cluster

For speeding up reading performance of your ...READ MORE

Jul 25, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,091 views
0 votes
1 answer

When is the reduce tasks start in Hadoop?

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

May 22, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,880 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
 • 9,350 points • 605 views
0 votes
1 answer

Are there any Limitations of Pig?

Limitations of the Apache Pig are: As the ...READ MORE

Jul 6, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,931 views
0 votes
1 answer

How to pause and resume hive job?

Practically speaking, it's difficult/impossible to pause and resume ...READ MORE

Jul 17, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,452 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 • 1,037 views
0 votes
3 answers

Cloudera Hadoop - Daemons not running

Please run below mentioned command. It will ...READ MORE

Aug 7, 2018 in Big Data Hadoop by Priyaj
 • 58,020 points • 3,084 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 • 720 views
0 votes
1 answer

How does HDFS Federation help HDFS Scale horizontally?

Let me try to explain you the ...READ MORE

Jul 12, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,497 views
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1 answer

Mappers in Hadoop

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

Jul 31, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 602 views
0 votes
1 answer

How the FIFO Scheduler arbitrates the cluster resources for a job and its tasks?

Let me clear your doubt. So what ...READ MORE

Jul 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,112 views
0 votes
1 answer

NameNode Status Check

There's one more way of checking the ...READ MORE

Jun 18, 2018 in Big Data Hadoop by shams
 • 3,670 points • 2,431 views
0 votes
1 answer

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

You can add some more memory by ...READ MORE

Apr 12, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,244 views
0 votes
1 answer

What is the slaves file configuration in Hadoop?

The main idea behind is the master ...READ MORE

Apr 24, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 4,712 views
0 votes
1 answer

How hadoop mapreduce job is submitted to worker nodes?

Alright, I think you are basically looking ...READ MORE

Mar 30, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 5,772 views
0 votes
1 answer

Installing Hive & Hadoop in VM

For Hadoop installation, I would recommend you ...READ MORE

Apr 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 4,787 views
0 votes
1 answer

How to change the replication factor of specific directory in Hadoop?

Yes, you can change the replication factor ...READ MORE

May 11, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 3,841 views
0 votes
1 answer

Error while copying the file from local to HDFS

Well, the reason you are getting such ...READ MORE

May 3, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 4,159 views
0 votes
1 answer

Checkpointing in Hadoop

Checkpointing is the process of combining the ...READ MORE

Jul 3, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,500 views
0 votes
1 answer

How can I put file to HDFS directly without copying it local disk?

Can use pipe from wget to hdfs. You ...READ MORE

Apr 15, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 4,845 views
0 votes
1 answer

NodeManager is not able to connect to the ResourceManager.

Here, I guess the issue is with ...READ MORE

May 1, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 4,104 views
0 votes
2 answers

Download & Install Cloudera parcels without being connected to internet?

You can find the details over here ...READ MORE

Aug 16, 2018 in Big Data Hadoop by Priyaj
 • 58,020 points • 1,969 views
0 votes
1 answer

Channel in Flume

 A transient store that receives the events ...READ MORE

Jul 17, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 710 views
0 votes
1 answer

Hive Precedence Order

SET Command in HIVE The command line –hiveconf ...READ MORE

Jul 9, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,026 views
+1 vote
2 answers

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

Hadoop server installed was kerberos enabled server. ...READ MORE

Aug 21, 2018 in Big Data Hadoop by Priyaj
 • 58,020 points • 1,935 views
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