Trending questions in Big Data Hadoop

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What is difference between pig and Mapreduce?

Hey, In MapReduce need to writ entire logic ...READ MORE

May 3, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,662 views
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1 answer

OOZIE Connectivity: "Unable to Connect"

You have to run the start command ...READ MORE

May 22, 2019 in Big Data Hadoop by Quil
 • 825 views
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1 answer

Hue LDAP: username attribute

You have to add this in the Hue ...READ MORE

May 28, 2019 in Big Data Hadoop by Rajul
 • 574 views
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1 answer

How Hadoop scalabality linear or proportional depends on the number of nodes?

Hey, These jobs are often IO based not ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 566 views
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1 answer

What things to keep in mind before upgrading Hbase ?

Hey, Before beginning the upgrade process, you must ...READ MORE

May 31, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 433 views
0 votes
1 answer

Hue: Set NT domain

Hi.  How to set NT domain? You have to ...READ MORE

May 29, 2019 in Big Data Hadoop by Kiran
 • 522 views
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1 answer

Why to check status in zookeper?

Hello, Status describes the metadata of a specified znode. ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 544 views
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1 answer

Set Hbase Server in Hue.

The Hbase thrift servers for clusters are ...READ MORE

May 27, 2019 in Big Data Hadoop by Esha
 • 587 views
+1 vote
1 answer

How to delete sqoop job?

$ ​sqoop job --delete jobname But be careful ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 4,731 views
0 votes
1 answer

Restrict number of workflows retrieved in an API call

Hey there! Because you are trying to ...READ MORE

May 27, 2019 in Big Data Hadoop by John
 • 582 views
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1 answer

Why Watch keyword is used in zookeeper?

Hey, Watches show a notification when the specified ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 572 views
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1 answer

Spark: Problem creating RDD

Please use the command as shown below ...READ MORE

May 24, 2019 in Big Data Hadoop by Raj
 • 709 views
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1 answer

Hadoop Namenode start issue

Try restarting the master: $ sudo reboot $ sudo ...READ MORE

May 22, 2019 in Big Data Hadoop by Rishi
 • 788 views
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1 answer

What do you understand by Filters in Hbase?

 Hey, Basically,  by allowing users to add limiting ...READ MORE

May 22, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 790 views
0 votes
1 answer

How to start and stop Master in HBase?

Hello, Using the “local-master-backup.sh” you can start up ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 735 views
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1 answer

How to import tables into Hive from Sqoop?

Very simple, in your sqoop command that ...READ MORE

May 15, 2019 in Big Data Hadoop by John
 • 1,061 views
0 votes
1 answer

Oozie editor issue in CDH 5.4: Documents not available.

Hi. CDH 5.4 and later versions use ...READ MORE

May 27, 2019 in Big Data Hadoop by Nisha
 • 544 views
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1 answer

What is metastore in Hive architecture?

Hey, Hive chooses respective database servers to store ...READ MORE

May 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,272 views
0 votes
1 answer

Problem while running MapReduce code.

You will have to create a Mapper ...READ MORE

May 23, 2019 in Big Data Hadoop by Rishi
 • 695 views
0 votes
1 answer

How to confirm if Hue plugins are properly set?

You can confirm it like this: $ tail ...READ MORE

May 24, 2019 in Big Data Hadoop by Shirish
 • 646 views
0 votes
1 answer

How to install Flume on Linux?

All you have to do is get ...READ MORE

Feb 26, 2019 in Big Data Hadoop by Rishi
 • 4,400 views
0 votes
1 answer

what is Region keyword and and store keyword in Hbase?

Hey, In HBase, tables are split into regions ...READ MORE

May 20, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 809 views
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1 answer

Query regarding sqoop job

There no way to take any precautions ...READ MORE

May 23, 2019 in Big Data Hadoop by Imran
 • 667 views
0 votes
1 answer

How to override Mapred home directory using sqoop?

Sqoop provides an option to override the ...READ MORE

May 17, 2019 in Big Data Hadoop by Rajini
 • 918 views
0 votes
1 answer

List of all the functions that can be obtain from hive?

Hello, A list of all functions can be ...READ MORE

May 16, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 967 views
+1 vote
1 answer

Need help installing Flume on Windows

Hi. Here's what you need.  Follow the below ...READ MORE

Feb 27, 2019 in Big Data Hadoop by Thakur
 • 4,320 views
0 votes
2 answers

Error:- cannot locate pig-core-hr. jar. do ‘ant -Dhadoopversion=23 jar’

Even I got the same error, I ...READ MORE

Apr 26, 2019 in Big Data Hadoop by disha
edited Apr 29, 2019 by Gitika • 1,762 views
0 votes
1 answer

Explain to me the difference between HBase and HDFS.

Hadoop generally consists of three major components: HDFS It ...READ MORE

Apr 12, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 2,404 views
0 votes
1 answer

Explain the function of ORDER-BY operator in pig?

Hi, The ORDER-BY operator is used to display ...READ MORE

May 7, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,343 views
0 votes
1 answer

What do you mean by Bag in Pig?

Hey, Bag in Apache Pig is nothing but ...READ MORE

May 3, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,482 views
0 votes
1 answer

How to add user in supergroup of hdfs in linux?

Yes , now i have whole idea ...READ MORE

Sep 21, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 11,170 views
0 votes
1 answer

Explain to me the difference between name node and secondary name node.

Firstly, You need to understand the major ...READ MORE

Apr 30, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,595 views
0 votes
1 answer

Spark.read.csv to create RDD into Dataframe

You can use a case class and ...READ MORE

Jan 22, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 5,856 views
0 votes
1 answer

Difference between Hadoop Mapreduce in MongoDB versus MangoDB's built-in MapReduce

Let me line up the crucial differences ...READ MORE

Apr 24, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,843 views
0 votes
1 answer

How to decrease load on HBase while importing Sqoop?

Sqoop by default serializes all the input ...READ MORE

May 16, 2019 in Big Data Hadoop by Yogi
 • 890 views
0 votes
1 answer

How to set Zookeeper server for Accumulo in sqoop?

Hi. To mention the Zookeeper server in ...READ MORE

May 17, 2019 in Big Data Hadoop by Kumar
 • 879 views
0 votes
1 answer

What is REST keyword in Hbase?

Hey, REST stands for Representational State transfer, which ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 679 views
0 votes
1 answer

How to loacte data cell in Hbase?

Hey, Hbase uses the coordinates to locate a ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 670 views
–1 vote
1 answer

Why is Hive not good for OLTP?

Apache Hive is mainly used for batch processing i.e. ...READ MORE

Jan 7, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 6,481 views
0 votes
1 answer

Why Alter keyword has been used in HBase?

Hey, Alter is the command used to make ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 562 views
0 votes
1 answer

Use of Describe keyword in HBase?

Hey, The describe command returns the description of ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 559 views
0 votes
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How to specify Hue Server Http address?

Search for the Hue configuration file on ...READ MORE

May 24, 2019 in Big Data Hadoop by Rahul
 • 506 views
0 votes
1 answer

Sqoop incremental append by date

Consider a table with 3 records which ...READ MORE

Feb 20, 2019 in Big Data Hadoop by Omkar
 • 69,220 points • 4,559 views
0 votes
1 answer

Why Max is throwing in below query in hive for alias?

Hi, You can do one thing, just enclose ...READ MORE

May 17, 2019 in Big Data Hadoop by reshma
 • 853 views
0 votes
1 answer

how to execute pig script in MapReduce mode?

Hey, To execute pig script we can use ...READ MORE

May 8, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,221 views
0 votes
1 answer

How to run HCatalog using Hive?

You can run HCatalog using the below ...READ MORE

May 17, 2019 in Big Data Hadoop by Likith
 • 784 views
0 votes
1 answer

Features of Hive?

Hey, The features of Hive are as follows: It ...READ MORE

May 10, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,126 views
0 votes
1 answer

What are different types of blocks in Hbase?

Hey, Block is a single smallest amount / ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 620 views
0 votes
1 answer

Hadoop version problem: System is launching different version of Hadoop

When you run sudo service hadoop-master command, it internally runs ...READ MORE

May 22, 2019 in Big Data Hadoop by Tina
 • 550 views
0 votes
1 answer

Cant connec to zookeeper: KeeperErrorCode = ConnectionLoss for HBase

Mostly HMaster is not running. Enter the ...READ MORE

Dec 28, 2018 in Big Data Hadoop by Omkar
 • 69,220 points • 6,807 views
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