Most answered questions in Big Data Hadoop

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What happens when a datanode that is dead becomes active again?

When NameNode notices that it has not ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Rishi
 • 4,948 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
 • 1,840 views
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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
 • 3,908 views
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1 answer

Error: Failed to locate WinUtils binary in the Hadoop Binary Path

I will redirect you to a link ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 10,547 views
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1 answer

Error: Container is running beyond Memory Limits

I had a similar problem while I was working ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 6,958 views
0 votes
1 answer

In Which cluster(Dev or Prod) we test the job?

Well, that depends on what a particular ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Raj
 • 700 views
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1 answer

Help m setting up a multi node hadoop cluster

I can help you on this one. Requirement: ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 892 views
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1 answer

Help me solve this error "Unable to load Hadoop Native library for your platform"

I hope I understood your query properly I ...READ MORE

Jun 20, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 3,464 views
0 votes
1 answer

How to use appnedToFile command in HDFS?

Hey, This Hadoop fs command appends single sources ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 3,097 views
0 votes
1 answer

How can create the dynamic partition table with data in Hive?

Hi, We can see some steps to do ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 4,685 views
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1 answer

Differentiate between FileSink and FileRollSink

Hey, The major difference between HDFS FileSink and ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 601 views
0 votes
1 answer

ERROR 1142 (42000): SELECT command denied to user ''@'localhost' for table 'user'

Hey, This is a mysql command line error ...READ MORE

Jun 20, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 56,969 views
0 votes
1 answer

ERROR 1227 (42000): Access denied; you need (at least one of) the CREATE USER privilege(s) for this operation.

Hi, You can follow some steps to remove ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 31,529 views
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1 answer

Is StandBy NameNode a daemon?

StandBy NameNode is not a separate daemon. ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Raman
 • 626 views
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1 answer

What is Shared Edit Logs in case of Stand By Name Node in Hadoop 2.x?

Yes, Shared Edit Logs exist in case ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Hansini
 • 3,136 views
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1 answer

How setrep command is used and what is the description to this?

Hi, This HDFS command is used to change ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 6,983 views
0 votes
1 answer

Regarding unstructured data handling

There are multiple ways to import unstructured ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Ranjitha
 • 692 views
0 votes
1 answer

Sqoop Job not working

I have made a little change to ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Vishwa
 • 1,097 views
0 votes
1 answer

Hive Connection issue

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

Jun 19, 2019 in Big Data Hadoop by Karan
 • 1,698 views
0 votes
1 answer

ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'oozie'

Hey, I got the same error and it ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 13,826 views
0 votes
1 answer

Unable to go to Hbase Shell

Hi@avi, I also met the same problem. You ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Hiran
edited Jun 9, 2020 by MD • 1,318 views
0 votes
1 answer

Difference between root of hdfs and local machine

The command hdfs dfs -put command is used to ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Mahi
 • 2,197 views
0 votes
1 answer

Custom setting of MapReduce tasks in HIVE

When we set number of mappers to ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Ferry
 • 1,035 views
0 votes
1 answer

Hdfs cluster and Master/standby Machine

Client submits job to Namenode. To achieve this, Client ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Raj
 • 850 views
0 votes
1 answer

How can we use IN/EXIST operator in Hive?

Hey, Yes, now Hive supports IN or EXIST, ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 8,955 views
+1 vote
1 answer

Can we use LIKE operator in Hive?

Hey, Yes, Hive supports LIKE operator, but it ...READ MORE

Jun 19, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 21,230 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 • 1,554 views
0 votes
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 • 1,672 views
0 votes
1 answer

Is it possible to change the default location of a managed table?

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

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,977 views
0 votes
1 answer

Oozie exception error handling.

Hi, We can set Hive Action configuration using ...READ MORE

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,535 views
0 votes
1 answer

Error: Tasktracker is not starting

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

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 964 views
0 votes
1 answer

Command to allows polling the Oozie server for an Oozie job?

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

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,212 views
0 votes
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 • 1,853 views
0 votes
1 answer

Differences between Cassandra and Hadoop, Real-time Processing v/s Batch Processing

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

Jun 18, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,078 views
0 votes
1 answer

Explain how the MongoDB MapReduce and Hadoop MapReduce are similar to each other and explain the differences if there are any.

Let us discuss the few differences between ...READ MORE

Jun 18, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 833 views
0 votes
1 answer

How to see a running workflow, coordinate or bundle of job in Oozie?

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

Jun 18, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,080 views
0 votes
1 answer

How to submit bundle features in Oozie?

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

Jun 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 856 views
0 votes
1 answer

Namenode stops automatically after a while when started Hadoop.

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

Jun 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,213 views
0 votes
1 answer

Error: Operation not permitted, starting namenode logging to usr/local/hadoop, while starting Hadoop cluster.

Hey, You can do one thing, make a ...READ MORE

Jun 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,334 views
0 votes
1 answer

Is it possible to run Apache Spark without Apache Hadoop?

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

Jun 17, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,034 views
0 votes
1 answer

Find Hadoop Configuration in Java Util.

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

Jun 17, 2019 in Big Data Hadoop by ravikiran
 • 4,620 points • 1,401 views
0 votes
1 answer

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, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,919 views
0 votes
1 answer

Error: Unable to load native-hadoop library for your platform.

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

Jun 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,194 views
0 votes
1 answer

Mention Job Flow parameter in Oozie?

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

Jun 17, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 653 views
0 votes
1 answer

Command use to kill the job in MapReduce.

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

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 741 views
0 votes
1 answer

How to see the history of Job output-dir in MapReduce?

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

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,148 views
0 votes
1 answer

Command to see the status of MapReduce job?

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

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 3,303 views
0 votes
1 answer

How to print the counter value in MapReduce?

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

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 1,350 views
0 votes
1 answer

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 • 2,317 views
0 votes
1 answer

Hadoop input folder not found?

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

Jun 14, 2019 in Big Data Hadoop by Gitika
 • 65,770 points • 2,805 views
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