Trending questions in Big Data Hadoop

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Hadoop: java.lang.IllegalArgumentException: Wrong FS: expected: file:///

Try this: Configuration configuration = new Configuration(); FileSystem fs ...READ MORE

Dec 12, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 8,939 views
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1 answer

How to Change the maximum number of cells of a column family?

Hey, Given below is the syntax to change ...READ MORE

May 24, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,911 views
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Can anyone help me with the installation and configuration procedures of Hadoop Multi-Node Cluster?

If you are ready to switch to ...READ MORE

May 28, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,726 views
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1 answer

How can I change data in HDFS?

You can not modified data once stored ...READ MORE

Feb 19, 2019 in Big Data Hadoop by Rishi
 • 5,983 views
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1 answer

How to configure Oozie to use Oracle?

You have to mention the following properties ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Rishi
 • 1,326 views
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1 answer

How will you backup an HBase cluster?

Hey, In 2 ways we can perform HBase ...READ MORE

May 22, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,968 views
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How to set Sqoop server in Hue?

I am not exactly sure what you ...READ MORE

May 27, 2019 in Big Data Hadoop by Karna
 • 1,745 views
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0 answers

Command to initiate MapReduce which provide decent UI?

I am new to MapReduce and want ...READ MORE

Jun 14, 2019 in Big Data Hadoop by Rachna
 • 1,006 views
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1 answer

Hive partitioning: Dynamic and static

Partitions are created depending on the end ...READ MORE

Feb 1, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 6,737 views
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1 answer

Explain what does the conf.setMapper Class do?

Hi, Conf.setMapperclass  sets the mapper class and all ...READ MORE

Jun 10, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,125 views
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1 answer

Disable Client/Server authentication in Hue

To disable the Client/Server authentication, you have ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Preetham
 • 1,419 views
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1 answer

What is work flow application consists of in Oozie?

Hi, A workflow application consists of the workflow ...READ MORE

Jun 12, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,023 views
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1 answer

Issues using sqoop command while listing database

Please use the following command. sqoop list-databases --connect ...READ MORE

May 23, 2019 in Big Data Hadoop by Raj
 • 1,878 views
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1 answer

What is the difference between the disable and disable-all keyword in HBase?

Hey, disable:- This command will start disabling the ...READ MORE

May 24, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,831 views
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How to load encrypted tables to encrypted table in Hive?

If the data is already encrypted, use ...READ MORE

May 30, 2019 in Big Data Hadoop by Esha
 • 1,556 views
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1 answer

How to set proxy server api in Hue?

Follows these steps: Open the hue configuration file Search for the [[yarn_clusters]] section Set ...READ MORE

May 30, 2019 in Big Data Hadoop by Reshma
 • 1,594 views
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1 answer

Using hedged reads in HBase

To enable hedged reads, open the hbase-site.xml file and ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Gani
 • 1,329 views
0 votes
1 answer

How to import selected columns in Sqoop?

If you want to import selected columns, ...READ MORE

May 15, 2019 in Big Data Hadoop by Shirish
 • 2,194 views
0 votes
1 answer

Hive, Sentry: Problem while granting roles to a group

The group name you are trying to ...READ MORE

May 31, 2019 in Big Data Hadoop by Jimmy
 • 1,491 views
0 votes
1 answer

Power of a number in Impala

Suppose you have fetched two values X ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Reshma
 • 1,222 views
0 votes
1 answer

HiveServer2 connection URL for remote mode

For a remote server, the URL format ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Mahesh
 • 1,311 views
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1 answer

Enable pluggable authentication for HiveServer2

To enable pluggable authentication, first, add the ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Yogi
 • 1,344 views
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1 answer

Can I use pattern matching in Hive?

Yes, it is possible to use pattern ...READ MORE

May 21, 2019 in Big Data Hadoop by Khan
 • 1,905 views
0 votes
1 answer

How to set LDAP authentication for HiveServer2 for unmanaged clusters?

To enable LDAP authentication for HiveServer2 unmanaged ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Sanman
 • 1,326 views
0 votes
1 answer

How to create an Ephemeral Znode in zookeeper?

Hey, To create an Ephemeral Znode, add -e flag as shown ...READ MORE

May 28, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,616 views
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1 answer

What start node does in Oozie?

Hey, The start node is the entry point for a ...READ MORE

Jun 11, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 960 views
0 votes
1 answer

What is the necessity of slave node in Oozie workflow?

Hey, A topology runs in a distributed manner, ...READ MORE

Jun 12, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 953 views
0 votes
1 answer

How to clear yarn cache?

Yarn has a command by default to clear ...READ MORE

Feb 5, 2019 in Big Data Hadoop by Omkar
 • 69,180 points • 6,432 views
0 votes
1 answer

How to set maximum dynamic partitions in MapReduce mode?

There is a default maximum number of ...READ MORE

May 21, 2019 in Big Data Hadoop by Likith
 • 1,859 views
0 votes
1 answer

How to configure ulimit for Hbase using command line?

Hi, Increasing the file handles for the user ...READ MORE

May 29, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,511 views
0 votes
1 answer

Oozie Uber JARs support configuration

You can configure Oozie to handle Uber ...READ MORE

Jun 6, 2019 in Big Data Hadoop by Karan
 • 1,158 views
0 votes
1 answer

what is the difference between drop and drop_all command in Hbase?

Hey, drop:- This command is used to drop ...READ MORE

May 24, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,702 views
0 votes
1 answer

Failed to upgrade the metastore in Hive?

Hey, If the problem you are having do the ...READ MORE

May 30, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,475 views
0 votes
1 answer

Hive: Display column to which there is SELECT access

You can use the following query to ...READ MORE

Jun 3, 2019 in Big Data Hadoop by Pratham
 • 1,269 views
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1 answer

To locate the HBase data cell which three co-ordinate is used ?

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

May 29, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,516 views
0 votes
1 answer

Unable to run Name node and datanode on Single Node cluster: Does not contain a valid host:port

Add the following properties in the core-site.xml file, it ...READ MORE

May 22, 2019 in Big Data Hadoop by Sanam
 • 1,777 views
0 votes
1 answer

What is the syntax for creating bucketing table in hive?

Hi, Syntax for creating bucketed table is as ...READ MORE

May 16, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,040 views
0 votes
1 answer

How to secure thrift server crash if receives invalid data?

Hey, The Thrift server may crash if it ...READ MORE

May 29, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,457 views
+1 vote
1 answer

How to write file in hdfs using python?

#!/usr/bin/python from subprocess import Popen, PIPE cat = Popen(["hadoop", ...READ MORE

Dec 6, 2018 in Big Data Hadoop by Omkar
 • 69,180 points • 8,932 views
0 votes
1 answer

Configurations to enable impersonation for Hbase thrift servers

The default configuration suggested in the official ...READ MORE

May 27, 2019 in Big Data Hadoop by Khan
 • 1,534 views
0 votes
1 answer

What is group_name_filter property in Hue file?

The group_name_attr is used to set the username in the ...READ MORE

May 28, 2019 in Big Data Hadoop by Vasu
 • 1,494 views
0 votes
1 answer

What is the command to know the details of your data created in a table in Hive?

Hey, Yes, there is a way to check ...READ MORE

May 15, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,079 views
0 votes
1 answer

HiveServer2 connection URL format

The HiveServer2 connection URL has the following ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Giri
 • 1,183 views
0 votes
1 answer

Which code do we use to open the connection in HBase?

Hey, To open a connection, following code: Configuartion myconf ...READ MORE

May 23, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 1,724 views
0 votes
1 answer

How to change WebHCat default port?

The default port configuration is stored in ...READ MORE

Jun 4, 2019 in Big Data Hadoop by Hari
 • 1,177 views
0 votes
1 answer

Hive: Execute MapReduce jobs locally

You can set Hive to run MapReduce ...READ MORE

May 21, 2019 in Big Data Hadoop by Gani
 • 1,774 views
0 votes
1 answer

Why for metastore RDBMS is used?

Hey, Yes, it is correct that Hive is ...READ MORE

May 11, 2019 in Big Data Hadoop by Gitika
 • 65,730 points • 2,239 views
0 votes
1 answer

What is pig storage and why it is used?

Hello, In pig, there is a default load ...READ MORE

May 8, 2019 in Big Data Hadoop by Gitika
 • 65,730 points
edited May 8, 2019 by Gitika • 2,366 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
 • 5,349 views
0 votes
1 answer

How to set job tracker host in Hue?

You have to set this in the hue ...READ MORE

May 30, 2019 in Big Data Hadoop by Raman
 • 1,407 views
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