Trending questions in Big Data Hadoop

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Datanode not running on Hadoop-2.7.3

Hey, I solved this problem by removing hadoop ...READ MORE

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,099 views
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1 answer

How to change the Hive table comment?

Yes, it is possible to change the ...READ MORE

May 20, 2019 in Big Data Hadoop by Tina
 • 3,143 views
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Mutliple Output Format in Hadoop

Each reducer uses an OutputFormat to write ...READ MORE

Jul 19, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 546 views
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How to Import the complete directory into HDFS?

First, need to create a directory in Hadoop: $ ...READ MORE

Jul 15, 2019 in Big Data Hadoop by Hiran
 • 726 views
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1 answer

Does NameNode provide with the IP address of data nodes where replication of data is to be stored?

No, the data node does not select ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Kim
 • 1,802 views
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RDMBS integration with Hadoop

About integrating RDBMS with Hadoop, you can ...READ MORE

Jul 16, 2019 in Big Data Hadoop by Nanda
 • 651 views
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Creating a hive script and execute in the edureka cloudlab.

Please remove -f option from hive arguments and use hql extension ...READ MORE

Jul 14, 2019 in Big Data Hadoop by Karan
 • 731 views
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1 answer

Integration of hbase

For HBase Pig integration, you can refer ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Kiran
 • 896 views
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How to execute python script in hadoop file system (hdfs)?

If you are simply looking to distribute ...READ MORE

Sep 19, 2018 in Big Data Hadoop by digger
 • 26,740 points • 13,557 views
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What is the use of ZooKeeper in Hbase?

Hey, The zookeeper is used to maintain the ...READ MORE

May 21, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 3,007 views
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How to create Children or Sub-znode in zookeeper?

Hey, Creating children is similar to creating new ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,728 views
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what is Hive on spark?

Hey, Hive contains significant support for Apache Spark, ...READ MORE

Jul 2, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,194 views
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Sending hdfs file to a non hadoop cluster

There are different ways to do this. ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Tarun
 • 850 views
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1 answer

Sqoop: Oracle Connection String

The format for connection string for Oracle ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Varun
 • 2,273 views
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Can we use different i/p and o/p format classes in mapreduce code?

Yes, InputFormatClass and OutputFormatClass are independent of ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Jimmy
 • 831 views
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Unable to instantiate hive metastore

To resolve this issue, follow the steps ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Ritu
 • 992 views
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Creating testjob in sqoop for incremental load

Yes, it is possible to do so. ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Umar
 • 988 views
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1 answer

What is GraphX in Spark?

Hi, Spark uses GraphX for graph processing to ...READ MORE

Jul 2, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,120 views
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2 answers

if HDFS threshold has been reached. What is the our approach to resolve this issue?

This was a fundamental issue in HDFS ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,479 views
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1 answer

How to change the default value and to alter a column in sql?

Hi, You can try this: ALTER TABLE foobar_data CHANGE ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,524 views
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1 answer

Is data sent to some other location to be processed in pig?

With pig, we are not taking data ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Adi
 • 732 views
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1 answer

When and when not to use PigStore?

The Pig storage is not used only ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Rushil
 • 730 views
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1 answer

How to enable impersonation in HiveServer2?

You have to configure 2 files for ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Reshma
 • 2,330 views
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1 answer

Hive Execution Engine

The default execution engine for Hive is mr. To ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Varun
 • 2,282 views
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1 answer

How to check the information and status of workflow, coordinator or Bundle job or coordinator Action in Oozie?

Hi, You can check this example to see ...READ MORE

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,673 views
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1 answer

Amazon AWS Web Services

If you want to limit your hadoop ...READ MORE

Jul 8, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 789 views
0 votes
1 answer

How does decreasing the block size make more space on Datanode?

When there is space in data nodes ...READ MORE

Jul 5, 2019 in Big Data Hadoop by Krish
 • 917 views
0 votes
1 answer

Pig: Does these jar files run in NodeManager to produce result?

Below is what happens with the map-reduce ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Lucy
 • 672 views
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1 answer

Hive Connection issue

You are getting the issues probably because ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Karan
 • 1,563 views
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1 answer

Hive: Dropping a not empty database

This behavior is because Hive by default ...READ MORE

May 20, 2019 in Big Data Hadoop by Rakshit
 • 2,859 views
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1 answer

Where is table data stored in Apache HIve by default?

Hi, yes, you can do it by using  ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,597 views
0 votes
1 answer

Heartbeat time interval for Datanode

The heartbeat interval is 3 seconds by ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Rajat
 • 1,523 views
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1 answer

JDBC connection to Hive using TLS/SSL

Hi. The properties are right but in ...READ MORE

May 31, 2019 in Big Data Hadoop by Karan
 • 2,375 views
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1 answer

When creating a Hive table how can you specify the table creator name in Hive?

Hey, While creating a table the TBLPROPERTIES clause is used ...READ MORE

Jun 26, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,226 views
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Merging Files using PIG

In order to merge two or more ...READ MORE

Jul 9, 2019 in Big Data Hadoop by Tina
 • 650 views
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What is the use of setting the name of the job in mapreduce?

Job job = new Job(conf,"job_name") is just used ...READ MORE

Jul 10, 2019 in Big Data Hadoop by Umesh
 • 626 views
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1 answer

What is the process to integrate meta store for hive?

Hi. Here are the steps you can ...READ MORE

Jun 25, 2019 in Big Data Hadoop by Jimmy
 • 1,241 views
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1 answer

How does Hadoop process data which is split across multiple boundaries in an HDFS?

I found some comments: from the Hadoop ...READ MORE

Jul 1, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 969 views
0 votes
1 answer

Connection String for MySQL database using Sqoop

The format for the connection string and ...READ MORE

Jun 6, 2019 in Big Data Hadoop by John
 • 2,024 views
0 votes
1 answer

JDBC to HiveServer2 connection in HTTPS mode with SSL enabled

To connect to HiveServer2 in HTTPS mode ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Firoz
 • 2,111 views
0 votes
1 answer

Configuring JDBC Clients for LDAP Authentication with HiveServer2

JDBC client requires a connection URL as ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Raman
 • 2,134 views
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1 answer

Install Hadoop On Ubuntu

I guess it should be at /hadoop/hadoop-common-project/hadoop-common/sr ...READ MORE

Jul 8, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 615 views
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How to install Hadoop on Ubuntu?

You can manually create a file hadoop-env.sh ...READ MORE

Jul 5, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 739 views
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Why HBase is column oriented database?

Hey, Yes, Hbase is known to be a ...READ MORE

May 20, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,713 views
0 votes
1 answer

How can we configure remote metastore mode in Hive?

Hey,  Basically, hive-site.xml file has to be configured ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,454 views
0 votes
1 answer

Impala: Add months to current time

You can add the months using the add_months method ...READ MORE

Jun 6, 2019 in Big Data Hadoop by John
 • 1,972 views
0 votes
1 answer

Sqoop error while trying to connect to MySql

Please use the below command to solve ...READ MORE

May 22, 2019 in Big Data Hadoop by Bhagavath
 • 2,616 views
0 votes
1 answer

How do I create a subquery in hive?

Hey, Hive subquery is a select expression enclosed ...READ MORE

May 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,822 views
0 votes
1 answer

What will happen if the OOZIE_URL environment variable has not been set?

Hey, If the Oozie_URL environment variable has not ...READ MORE

Jun 24, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,178 views
0 votes
1 answer

What is the PostgreSQL connection string for Sqoop?

The format of the connection string is: jdbc:postgresql://<HOST>:<PORT>/<DATABASE_NAME> You ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Kamal
 • 1,957 views
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