Trending questions in Big Data Hadoop

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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 • 2,173 views
+1 vote
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 • 5,745 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 • 525 views
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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 • 1,049 views
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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
 • 58,090 points • 2,357 views
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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 • 3,584 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 • 5,285 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 • 3,402 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 • 1,080 views
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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 • 4,088 views
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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 • 3,697 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
 • 9,390 points • 773 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 • 4,559 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 • 388 views
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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
 • 9,390 points • 4,251 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
 • 58,090 points • 1,375 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 • 3,455 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
 • 58,090 points • 1,387 views
0 votes
1 answer

Which latest Hadoop version is stable?

Try Checking this website: http://hadoop.apache.org/releases.html. Here you will ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,946 views
0 votes
2 answers

What is the difference between the Smart Data Access of SAP HANA and SAP HANA Vora?

Hadoop: Used to store Big Data in ...READ MORE

Jun 21, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,109 views
0 votes
1 answer

MapFile in Pig

MapFile is a class which serves file-based ...READ MORE

Jul 6, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 472 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 • 3,814 views
0 votes
1 answer

Is there any way to pull data from Mainframe to Hadoop?

First of all, COBOL is a programming ...READ MORE

May 21, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,356 views
0 votes
1 answer

NAS and HDFS Comparison

NAS stands for Network-attached Storage and is ...READ MORE

Jun 11, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,450 views
0 votes
1 answer

Difference between Hadoop file system and Linux

Yes, to a certain extent we can ...READ MORE

Apr 20, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,582 views
0 votes
1 answer

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

Just try the following command: hadoop fs -rm ...READ MORE

May 7, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,796 views
0 votes
1 answer

How to analyze block placement on datanodes and rebalancing data across Hadoop nodes?

HDFS provides a tool for administrators i.e. ...READ MORE

Jun 21, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 834 views
0 votes
1 answer

Where is Hadoop Classpath?

It is set in hadoop-config.sh. You can add ...READ MORE

Apr 2, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 4,223 views
0 votes
1 answer

Is there any way to setup Hadoop nodes (data nodes/namenodes) to use multiple volumes/disks?

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

Jun 20, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 775 views
0 votes
1 answer

Different partitoners in Cassandra

Murmur3Partitioner is the default partitioner. It is ...READ MORE

Jun 27, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 424 views
0 votes
1 answer

NameNode & DataNode memory

Name Node only store metadata which is ...READ MORE

Jun 12, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,072 views
0 votes
1 answer

Gossip Protocol features.

Gossip Protocol in Cassandra is a peer-to-peer ...READ MORE

Jun 26, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 416 views
0 votes
1 answer

Why does my yarn application not have logs even with logging enabled?

yarn application -list command shows you all ...READ MORE

Mar 19, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 4,587 views
0 votes
1 answer

Java MapReduce error saying No FileSystem for scheme:hdfs

The problem is with the dependencies. The ...READ MORE

May 9, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,286 views
0 votes
1 answer

I am getting error while starting the Hadoop Daemons i.e. ResourceManger & NodeManager in Hadoop 3

According to me the error is because ...READ MORE

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 3,292 views
0 votes
1 answer

out of Memory Error in Hadoop

See if you can share the screenshot ...READ MORE

May 22, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,634 views
0 votes
1 answer

What are the various ways to import files into HDFS?

There are various tools and frameworks available ...READ MORE

Apr 13, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,248 views
0 votes
1 answer

Why Apache Pig is used instead of Hadoop?

As you know writing mapreduce programs in ...READ MORE

May 8, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,170 views
0 votes
1 answer

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

The generic command i.e used to import ...READ MORE

Apr 10, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,335 views
0 votes
1 answer

Replication and Calculations

Since there are 3 nodes, when we ...READ MORE

Jun 11, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 665 views
0 votes
1 answer

Getting error in JAVA_HOME variable.

First of all check the hadoop version ...READ MORE

May 11, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,995 views
0 votes
1 answer

What is Speculative Execution?

If a node is executing a task ...READ MORE

Jun 18, 2018 in Big Data Hadoop by shams
 • 3,670 points • 359 views
0 votes
1 answer

Is it compulsory to have the hadoop user as sudo user?

No, it is not important to have ...READ MORE

May 8, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,116 views
0 votes
1 answer

Is there any way to include a python package with Hadoop streaming job?

See I don't know the answer to ...READ MORE

May 10, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,982 views
0 votes
1 answer

Sqoop vs distCP

DistCP utility can be used to transfer ...READ MORE

May 30, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,106 views
0 votes
1 answer

NameNode without any data

There does not exist any NameNode without ...READ MORE

May 29, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,139 views
0 votes
1 answer

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

I am not sure about the issue. ...READ MORE

May 3, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,246 views
0 votes
1 answer

Is a HDFS block sequential ?

It seems like you are confused between the ...READ MORE

May 21, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,417 views
0 votes
1 answer

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

Setup & cleanup methods are executed after ...READ MORE

May 8, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,973 views
–1 vote
1 answer

Hadoop dfs -ls command?

In your case there is no difference ...READ MORE

Mar 16, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 4,290 views
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