Most viewed questions in Big Data Hadoop

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1 answer

What are the different ways of executing pig scripts?

There are three ways to execute the ...READ MORE

Feb 21, 2019 in Big Data Hadoop by Neha
 • 6,300 points • 4,607 views
0 votes
2 answers

What is the difference between Oozie and Nifi ?

The main difference between Oozie and Nifi ...READ MORE

May 7, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,592 views
0 votes
2 answers

start-dfs.sh command is not starting Hadoop JobTracker & TaskTracker

On which version of hadoop do you ...READ MORE

Jul 24, 2019 in Big Data Hadoop by Lokesh Singh
 • 4,587 views
0 votes
1 answer

What is the command to count number of lines in a file in hdfs?

hadoop fs -cat /example2/doc1 | wc -l READ MORE

Nov 22, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,586 views
0 votes
1 answer

Load data into teradata using sqoop export

The general syntax to do this as ...READ MORE

Aug 9, 2019 in Big Data Hadoop by Kunal
 • 4,560 views
0 votes
1 answer

Hadoop Mapreduce: Class Not Found Exception

Try adding this Job job = new Job(conf, ...READ MORE

Oct 29, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,538 views
0 votes
1 answer

What is -cp command in hadoop? How it works?

/user/cloudera/data1 is not a directory, it is ...READ MORE

Oct 17, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 4,532 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 • 4,530 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 • 4,527 views
0 votes
1 answer

How to find the port on which hdfs is running?

If you are using hadoop 2.7 or ...READ MORE

Jan 25, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,523 views
0 votes
1 answer

Command to copy file from desktop to hdfs

You can use either of the below ...READ MORE

Jul 11, 2019 in Big Data Hadoop by Firoz
 • 4,510 views
0 votes
1 answer

What is Network Topology in Hadoop?

Let's imagine your cluster as a tree ...READ MORE

Sep 6, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 4,509 views
0 votes
1 answer

Hadoop HDFS: Java API to move files to hdfs

You can use the FileUtil api to do this. Example: Configuration ...READ MORE

Nov 19, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,493 views
0 votes
1 answer

Command to stop the zookeeper server?

Hey, After connecting the server and performing all ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 4,485 views
+5 votes
2 answers

Hive to HDFS transfer

Hive does not store data. Hive is ...READ MORE

Sep 20, 2018 in Big Data Hadoop by SM
 • 4,478 views
+1 vote
1 answer

bash: sbin/hadoop: No such file or directory

The hadoop command is not present in ...READ MORE

Sep 18, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,477 views
0 votes
1 answer

Edge nodes in Hadoop

Namenodes and Datanodes are a part of ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Siri
 • 4,475 views
0 votes
1 answer

Hive: LOCATION and WITH DBPROPERTIES command in create table command

By default, the Hive database will be ...READ MORE

May 22, 2019 in Big Data Hadoop by Firoz
 • 4,468 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 • 4,457 views
0 votes
1 answer

Default file format in Hive

By Default its TextFileFormat for hive unless you use serdes to ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,453 views
0 votes
1 answer

How to run Java file in Hadoop?

Try this: hadoop fs -cat hdfs:///user/hadoop/values.txt READ MORE

Dec 12, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,443 views
0 votes
1 answer

How can Hadoop process the records that are split across the block boundaries?

First of all, Map Reduce algorithm is not programmed ...READ MORE

Apr 15, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,424 views
0 votes
1 answer

Deleting directory in Sqoop

You can use the --delete-target-dir : $ sqoop import ...READ MORE

Feb 11, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,424 views
0 votes
1 answer

Error: schemaTool failed

Hey, The error you got because you might ...READ MORE

May 13, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 4,399 views
0 votes
1 answer

Hadoop Job Tracker problem. I cannot connect to http://localhost:50030/

I think you are using new version ...READ MORE

Nov 30, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,376 views
0 votes
1 answer

How to concatenate hdfs files and store in output file?

You can use a combination of cat and put command. Something ...READ MORE

Dec 6, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,369 views
0 votes
2 answers

Sqoop: Could not load mysql driver exception.

I add mysql driver for sqoop and it ...READ MORE

Mar 1, 2020 in Big Data Hadoop by Manh Quang
 • 180 points • 4,339 views
0 votes
1 answer

what does velocity in big data mean

Velocity in big data refers to the ...READ MORE

Feb 3, 2022 in Big Data Hadoop by CoolCoder
 • 4,420 points • 4,338 views
0 votes
1 answer

How to set Hive Server port?

You can set the port in the hive-site.xml file. ...READ MORE

May 31, 2019 in Big Data Hadoop by Aisha
 • 4,338 views
0 votes
0 answers

EXCEL: How to automatically add serial number in Excel Table using formula that is immune to filtering / sorting?

I want to create an Excel Table ...READ MORE

Mar 24, 2022 in Big Data Hadoop by Edureka
 • 13,690 points • 4,328 views
0 votes
1 answer

ERROR org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper - ZooKeeper exists failed after 4 attempts

Hi@akhtar, This error shows, Hbase is not able ...READ MORE

Mar 31, 2020 in Big Data Hadoop by MD
 • 95,460 points • 4,322 views
0 votes
1 answer

Different between zkfc and zookeeper

Hey, The key difference between both the components ...READ MORE

Jul 31, 2019 in Big Data Hadoop by Sunny
 1 flag • 4,307 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 • 4,307 views
0 votes
1 answer

How to create new directory in hdfs using java code?

Try this: { Configuration config ...READ MORE

Dec 6, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,300 views
–1 vote
1 answer

Json and snappy compression

The issue you're facing arises because the ...READ MORE

Jan 11, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,219 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 • 4,217 views
0 votes
1 answer

exception:org.apache.hadoop.security.AccessControlException Permission denied: user=test, access=WRITE, inode="/user/hive/warehouse/test"

Hi@akhtar, According to your error, it shows you ...READ MORE

Apr 17, 2020 in Big Data Hadoop by MD
 • 95,460 points • 4,216 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 • 4,214 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 • 4,199 views
0 votes
1 answer

What if Resource Manager fails?

Failure of the resource manager is serious ...READ MORE

Jun 20, 2019 in Big Data Hadoop by John
 • 4,195 views
0 votes
1 answer

What is the hdfs command to check free space available?

You can see the free available space ...READ MORE

Nov 21, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,192 views
–1 vote
1 answer

Create Hive table with bucketing and ORC file format

create table hive_dml (emp_id int, first_name string, last_name ...READ MORE

Jan 5, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 4,176 views
0 votes
1 answer

Types of Hadoop Clusters

Below is the difference given between Standalone, ...READ MORE

Mar 26, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,171 views
0 votes
1 answer

What was Hadoop named after?

The creator of Hadoop, Doug Cutting named ...READ MORE

Dec 10, 2021 in Big Data Hadoop by CoderGirl
 • 500 points • 4,165 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 • 4,165 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 • 4,147 views
0 votes
1 answer

Spark Vs Hive LLAP Question

While Apache Hive and Spark SQL perform ...READ MORE

Jul 16, 2019 in Big Data Hadoop by Karan
 • 4,142 views
0 votes
1 answer

How to Modify the Maximum Number of Versions for a Column Family in Hbase?

Hey, The example uses HBase Shell to keep ...READ MORE

May 31, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 4,130 views
0 votes
1 answer

Hadoop: namenode -format error "java.io.IOException"

Run the command as sudo or add the ...READ MORE

Nov 26, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 4,126 views
0 votes
3 answers

JDBC connection string for Netezza

HI.. Netezza is one of the widely used ...READ MORE

Oct 30, 2020 in Big Data Hadoop by SRI
 • 4,124 views
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