Trending questions in Big Data Hadoop

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Hive Connection issue

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

Jun 19 in Big Data Hadoop by Karan
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Command to allows polling the Oozie server for an Oozie job?

Hey, You can use this command to see polling ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
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55 views
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Differences between Cassandra and Hadoop, Real-time Processing v/s Batch Processing

Hadoop is basically designed including HDFS loaded with ...READ MORE

Jun 18 in Big Data Hadoop by ravikiran
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64 views
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Where is table data stored in Apache HIve by default?

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

Jun 18 in Big Data Hadoop by Gitika
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40 views
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Error: permission denied locoalhost: chown: cannot access /usr/local/hadoop/ No such file or directory

Hey, As the error suggested that you have ...READ MORE

Jun 17 in Big Data Hadoop by Gitika
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Error: Tasktracker is not starting

Hey, From the master node, you can start ...READ MORE

Jun 18 in Big Data Hadoop by Gitika
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Error: Unable to load native-hadoop library for your platform.

Hi,  You should execute the command hdfs dfs -ls ...READ MORE

Jun 17 in Big Data Hadoop by Gitika
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68 views
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Is it possible to run Apache Spark without Apache Hadoop?

First of all, Let us get a ...READ MORE

Jun 17 in Big Data Hadoop by ravikiran
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Hive data load error

I have table in hive with below ...READ MORE

Jun 19 in Big Data Hadoop by Rishi
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How to see a running workflow, coordinate or bundle of job in Oozie?

Hey, You can use this example to see, $ ...READ MORE

Jun 17 in Big Data Hadoop by Gitika
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Find Hadoop Configuration in Java Util.

I understand your issue of HDFS, I ...READ MORE

Jun 17 in Big Data Hadoop by ravikiran
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2 answers

Installing HBase on windows

This procedure worked for me. https://medium.com/@bishupaulose/install ...READ MORE

Aug 16 in Big Data Hadoop by Sam
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Namenode stops automatically after a while when started Hadoop.

Hi, You can follow these steps which can ...READ MORE

Jun 17 in Big Data Hadoop by Gitika
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How to submit bundle features in Oozie?

Hey, You can use this example to learn ...READ MORE

Jun 17 in Big Data Hadoop by Gitika
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How to execute job In Oozie?

Hi, You can use this command to execute the job ...READ MORE

Jun 17 in Big Data Hadoop by Gitika
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Mention Job Flow parameter in Oozie?

Hey, You can use this job flow parameter ...READ MORE

Jun 17 in Big Data Hadoop by Gitika
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Command to get status of all running Oozie workflow

Hey, You can use this command to get ...READ MORE

Jun 12 in Big Data Hadoop by Gitika
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238 views
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Command to see the status of MapReduce job?

Hi, You can use this command given below: Syntax: $ ...READ MORE

Jun 14 in Big Data Hadoop by Gitika
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106 views
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1 answer

Enabling TLS/SSL on Hive

To enable TLS/SSL on hive, you have ...READ MORE

May 31 in Big Data Hadoop by Haran
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Datanode not running on Hadoop-2.7.3

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

Jun 13 in Big Data Hadoop by Gitika
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132 views
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How to see the history of Job output-dir in MapReduce?

Hi, You can use this command to the ...READ MORE

Jun 14 in Big Data Hadoop by Gitika
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43 views
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2 answers

Why we require SSH during hadoop installation?

Hey, SSH setup is required to do different ...READ MORE

Jun 11 in Big Data Hadoop by Gitika
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edited Jun 11 by Gitika 141 views
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Command use to kill the job in MapReduce.

Hi, The command you can use to kill ...READ MORE

Jun 14 in Big Data Hadoop by Gitika
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How to print the counter value in MapReduce?

Hey, You can use this command to print ...READ MORE

Jun 14 in Big Data Hadoop by Gitika
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34 views
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1 answer

Hadoop input folder not found?

Hey, This is because the user directory not ...READ MORE

Jun 13 in Big Data Hadoop by Gitika
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37 views
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1 answer

How kill control node works in Oozie?

Hey, The kill node allows a workflow job to kill ...READ MORE

Jun 12 in Big Data Hadoop by Gitika
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84 views
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Command to initiate MapReduce which provide decent UI?

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

Jun 14 in Big Data Hadoop by Rachna
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2 answers

Hey for all, how to get on large data i want use in hadoop?

Hi, To work with Hadoop you can also ...READ MORE

Jul 30 in Big Data Hadoop by Sunny
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1 answer

Error: org.apache.thrift.transport.TTransportException (state=08S01,code=0)

This error usually occurs when the HiveServer2 ...READ MORE

Jun 4 in Big Data Hadoop by Ram
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1 answer

Use cases of Apache Oozie?

Hi, Apache Oozie is used by Hadoop system ...READ MORE

Jun 11 in Big Data Hadoop by Gitika
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73 views
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1 answer

How Oozie prepares Hadoop configuration file?

Hi, Oozie prepares a Hadoop configuration file which ...READ MORE

Jun 12 in Big Data Hadoop by Gitika
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42 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 in Big Data Hadoop by Gitika
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What is fork Keyword in Oozie? How Fork and Join keyword are related t o each other in Oozie?

Hey, Basically, when we want to run multiple jobs ...READ MORE

Jun 11 in Big Data Hadoop by Gitika
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Mention what are the main configuration parameters that user need to specify to run MapReduce Job?

Hi, The user of the MapReduce framework needs ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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106 views
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1 answer

How to ensure that Oozie has started? Which Command line tool use to check the status of Oozie?

Hey, To get ensure that your Oozie has ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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86 views
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1 answer

Install PostgreSQL JDBC driver for Sqoop

All you have to do to install ...READ MORE

Jun 6 in Big Data Hadoop by Quill
266 views
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How Oozie workflow can be parameterised?

Hi, Oozie workflows can be parameterized. The parameters ...READ MORE

Jun 11 in Big Data Hadoop by Gitika
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28 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 in Big Data Hadoop by Gitika
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30 views
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1 answer

What is the necessity of slave node in Oozie workflow?

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

Jun 11 in Big Data Hadoop by Gitika
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25 views
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1 answer

Mention what is the Hadoop MapReduce APIs contract for a key and value class?

Hey, For a key and value class, there ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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59 views
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Explain what is WebDAV in Hadoop?

Hey, To support editing and updating files WebDAV ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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56 views
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How to create the Oozie DB using the 'ooziedb.sh' command line tool?

This is the command you can use: $ ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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50 views
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How to configure the Hadoop cluster with proxyuser for the Oozie process?

Hey, The following two properties are required in ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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51 views
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What is control flow Nodes defines in Oozie?

Hello, Control flow nodes define the beginning and ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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47 views
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1 answer

Explain what is a sequence file in Hadoop?

Hello, To store binary key/value pairs, sequence file ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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42 views
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1 answer

Mention how many InputSplits is made by a Hadoop Framework?

Hey, Hadoop will make 5 splits 1 split for ...READ MORE

Jun 10 in Big Data Hadoop by Gitika
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36 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 in Big Data Hadoop by Gitika
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35 views