Recent questions tagged namenode

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1 answer

What was Hadoop named after?

Dec 2, 2021 in Big Data Hadoop by Kavya
 • 700 points • 4,102 views
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WARNING: Use of this script to execute namenode is deprecated. WARNING:

Nov 10, 2021 in Big Data Hadoop by anonymous
 • 140 points • 1,426 views
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I was installing Hadoop for windows everything went smoothly but when I tried to format NameNode it displayed an error of failing to start NameNode. What should I do?

Oct 10, 2020 in Big Data Hadoop by alex
 • 120 points • 1,222 views
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1 answer

HI i was trying to install hadoop but i get these error....Format HDFS Namenode Error: Could not find or load main class ”-Djava.library.path=.home.hadoop.hadoop-3.2.1.lib"

Oct 7, 2020 in Big Data Hadoop by bezz
 • 120 points • 2,127 views
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1 answer

Format HDFS Namenode Error: Could not find or load main class ”-Djava.library.path=.home.hadoop.hadoop-3.2.1.lib.native”

Jun 12, 2020 in Big Data Hadoop by fwood
 • 120 points • 12,417 views
+1 vote
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hdfs namenode -format not working, not showing anything.

Sep 6, 2019 in Big Data Hadoop by nar
 • 1,657 views
+1 vote
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i tried to run hdfs namenode -format but i got this instead, -classpath and D:\Hadoop isn't recognized. Anyone can help? Thank you.

Sep 3, 2019 in Big Data Hadoop by Fuad
 • 1,745 views
0 votes
1 answer

How to restart failed Namenode?

Jul 23, 2019 in Big Data Hadoop by Karan
 • 3,897 views
0 votes
1 answer

Name node RAM metadata

Jul 23, 2019 in Big Data Hadoop by Rajini
 • 1,890 views
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2 answers

Namenode is not getting started

Jul 22, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,696 views
0 votes
2 answers

Explain to me the difference between Name Node and Secondary Name Node

Jun 21, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,750 views
0 votes
1 answer

Code was tested successfully in Dev and Test. When deployed to Productions it is failing. As an admin, how do you track the issue?

Jun 21, 2019 in Big Data Hadoop by Deepak P
 • 1,425 views
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2 answers

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

Jun 21, 2019 in Big Data Hadoop by Manish
 • 2,181 views
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1 answer

Heartbeat time interval for Datanode

Jun 20, 2019 in Big Data Hadoop by Karan
 • 2,091 views
0 votes
1 answer

Namenode stops automatically after a while when started Hadoop.

Jun 17, 2019 in Big Data Hadoop by Janosh
 • 1,404 views
0 votes
1 answer

How to enable WebHDFS in the Datanodes?

May 24, 2019 in Big Data Hadoop by Gani
 • 5,096 views
0 votes
1 answer

Hadoop Namenode start issue

May 22, 2019 in Big Data Hadoop by John
 • 1,071 views
+1 vote
1 answer

Hello all! I try to install hadoop but I have a problem when trying to format data folder with command "hdfs namenode -format". Error: Could not find or load main class Username

May 22, 2019 in Big Data Hadoop by anonymous
 • 3,606 views
+1 vote
1 answer

Explain to me the difference between Name node and Secondary name node

May 15, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,183 views
0 votes
1 answer

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

Apr 30, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,081 views
0 votes
1 answer

I have installed Hadoop on Ubuntu but name node is not running.

Apr 25, 2019 in Big Data Hadoop by anonymous
 • 2,383 views
0 votes
1 answer

How does a name-node understand by itself that it is facing a failure?

Mar 27, 2019 in Big Data Hadoop by ravi
 • 220 points • 1,039 views
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2 answers

Do we need to format datanode to store data

Jan 15, 2019 in Big Data Hadoop by Sam
 • 160 points • 4,529 views
0 votes
1 answer

Failed to start namenode in hadoop

Jan 12, 2019 in Big Data Hadoop by digger
 • 26,740 points • 14,942 views
–1 vote
1 answer

How to restrict nodes that talk to namenode?

Jan 5, 2019 in Big Data Hadoop by digger
 • 26,740 points • 1,051 views
–1 vote
1 answer

Namenode not running

Dec 27, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,853 views
–1 vote
1 answer

Namenode start error

Dec 26, 2018 in Big Data Hadoop by digger
 • 26,740 points • 734 views
0 votes
1 answer

Can DataNode and NameNode be commodity hardware?

Dec 19, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 3,581 views
0 votes
1 answer

What are active and passive “NameNodes” in Hadoop?

Dec 14, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,455 views
0 votes
1 answer

Hadoop: Can not start namenode: Unable to load native-hadoop library for your platform

Dec 5, 2018 in Big Data Hadoop by digger
 • 26,740 points • 3,059 views
+1 vote
1 answer

What is difference between Hadoop Namenode HA and HDFS federation?

Oct 31, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,791 views
0 votes
1 answer

What is the standard way to create files in your hdfs file-system?

Sep 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,969 views
0 votes
1 answer

Hadoop Nodes for Multiple Disks

Jul 3, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 2,318 views
0 votes
1 answer

NameNode Status Check

Jun 18, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 2,655 views
0 votes
1 answer

NameNode & DataNode memory

Jun 12, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,761 views
0 votes
1 answer

Getting error in JAVA_HOME variable.

May 11, 2018 in Big Data Hadoop by punk100
 • 2,592 views
0 votes
1 answer

How to change the checkpointing duration in Hadoop

May 11, 2018 in Big Data Hadoop by punk100
 • 1,835 views
0 votes
1 answer

Hadoop Command to merge edit logs with fsimage

May 11, 2018 in Big Data Hadoop by us0101
 • 2,447 views
0 votes
1 answer

What happend while formatting hadoop namenode?

May 4, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 936 views
0 votes
1 answer

After installing Hadoop on Windows7, NameNode failed to start

May 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 7,587 views
0 votes
1 answer

Changing hostname in fs.default.name property puts Hadoop in safemode

Apr 27, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,693 views
0 votes
1 answer

Namenode not getting started

Apr 23, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,474 views
0 votes
2 answers

How can I list NameNode & DataNodes from any machine in the Hadoop cluster?

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 12,132 views
0 votes
2 answers

Meaning of fs.defaultFS property in core-site.xml in hadoop

Apr 15, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 8,862 views
0 votes
2 answers

Function of “hadoop namenode -format” command

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 22,253 views
0 votes
1 answer

Is there a way to rebalance single Datanode in Hadoop.

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,218 views
0 votes
3 answers

What are differences between NameNode and Secondary NameNode?

Mar 23, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 16,529 views

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