Latest questions in Edureka Community

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1 answer

Hadoop: ERROR: datanode.DataNode: java.io.IOException: Datanode state: LV = -32 CTime = 1377582559943 is newer than the namespace state: LV = -32 CTime = 0

Hey, You can do one thing, open the file ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 835 views
0 votes
1 answer

Error: Could not find node statement with name 'default' or 'puppetserver.example.com, puppetserver.example, puppetserver, localhost' on node puppetserver.example.com

When you apply a catalog or a ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 1,809 views
0 votes
1 answer

puppet agent --test Error: Could not request certificate: Connection refused - connect(2) for "puppet" port 8140 Exiting; failed to retrieve certificate and waitforcert is disabled

In the later versions of puppet we ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 4,857 views
0 votes
1 answer

Hadoop: ERROR: datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in /app/hadoop/tmp/dfs/data: namenode namespaceID = 1580775695; datanode namespaceID = 1494801914

Hi, Namenode generates new namespaceID every time you ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 898 views
0 votes
1 answer

Windows agent doesn't request any certificates from puppet master?

Exiting; no certificate found and waitforcert is ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 1,495 views
0 votes
1 answer

Hadoop: ERROR datanode.DataNode: All directories in dfs.data.dir are invalid.

Hi, Try this, first delete all contents from ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,618 views
0 votes
1 answer

Puppet module path is not updating.

The puppet confdir depends on user that executes puppet ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 698 views
0 votes
2 answers

How to add an image to shiny application?

Hi Prachi. To include an image in the ...READ MORE

Aug 30, 2019 in Data Analytics by anonymous
 • 33,030 points • 11,840 views
0 votes
1 answer

Read an image into r

There are different packages that read images ...READ MORE

Aug 26, 2019 in Data Analytics by anonymous
 • 33,030 points • 2,604 views
0 votes
1 answer

ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed. java.io.FileNotFoundException: /app/hadoop/tmp/dfs/name/in_use.lock

Hi, You can change the owner to Hadoop ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,509 views
0 votes
1 answer

Error: Could not find declared class firewall at /etc/puppetlabs/code/environments/production/manifests/site.pp

The modules that you install on master need ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 1,857 views
0 votes
1 answer

Hadoop: error: Cannot lock storage /app/hadoop/tmp/dfs/name. The directory is already locked.

Hi, Check your dfs.name.dir and dfs.data.dir path in hdfs-site.xml. Or ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 1,955 views
0 votes
0 answers

On executing runner class I get cucumber.runtime.CucumberException: java.lang.NoSuchMethodException

On executing runner class I get cucumber.runtime.CucumberException: ...READ MORE

Aug 5, 2019 in Others by Irfan
 • 618 views
0 votes
1 answer

DJOB TRACKER : Can not start task tracker because java.lang.IllegalArgumentException: Does not contain a valid host:port authority: 127.0.0.1:9001

Hey, According to your property set up, there ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Gitika
 • 65,910 points • 541 views
0 votes
1 answer

Puppet: certificate verify failed: [self signed certificate in certificate chain for /CN=Puppet CA: master-b]

Make new clean master b, and duplicate ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 6,774 views
0 votes
1 answer

API key for Copyleaks Python sdk

Your API-KEY is available at your dashboard ...READ MORE

Aug 5, 2019 in Python by Kalgi
 • 52,360 points • 730 views
+1 vote
1 answer

Error while sending a transaction from Web3py to a Smart Contract in Remix

You get the revert error when a ...READ MORE

Dec 12, 2019 in Blockchain by Vivek
 • 1,537 views
0 votes
1 answer

Summarize only number or integer columns in the dataframe.

Hi, Payal. Use the below function. data frame %>% ...READ MORE

Aug 26, 2019 in Data Analytics by anonymous
 • 33,030 points • 477 views
0 votes
1 answer

Can I build a plagiarism checker using python?

Hey @Alessha, you can use an SDK ...READ MORE

Aug 5, 2019 in Python by Kalgi
 • 52,360 points • 3,268 views
0 votes
1 answer

Export the updated or manipulated dataframe or result as csv and excel file

Hi, Karthik. Check it out how to write ...READ MORE

Sep 10, 2019 in Data Analytics by sindhu
 • 383 views
0 votes
1 answer

Google Search Automation with Python Selenium.

You can simply automate pressing the "Enter" ...READ MORE

Aug 5, 2019 in Selenium by Payal
 • 11,068 views
0 votes
1 answer

MiniNAM error "ovs-vsctl: no bridge named s1, ovs-vsctl: no bridge named s2"

You are getting this error because you ...READ MORE

Aug 5, 2019 in Python by Haider
 • 1,983 views
0 votes
1 answer

Show count of unique values for each value in the field in dataframe

Hi, Use below r code. For one field, you ...READ MORE

Aug 21, 2019 in Data Analytics by anonymous
 • 33,030 points • 1,797 views
0 votes
1 answer

How to create a function like f(y) = xy^2 in Python?

This is very easy. have a look ...READ MORE

Aug 5, 2019 in Python by Neel
 • 3,020 points
edited Aug 6, 2019 by Kalgi • 1,765 views
0 votes
2 answers

What is random.sample() method in Python?

The use of random.sample() Randomly select multiple items from ...READ MORE

Mar 13, 2020 in Python by Vishal
 • 180 points • 4,577 views
0 votes
1 answer

Puppet: error “Job for puppetserver.service failed because the control process exited with error code”

I noticed once when I started Puppet ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 5,378 views
0 votes
1 answer

Puppet: Error: Could not get lock /var/lib/dpkg/lock – open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

I faced the same error while i ...READ MORE

Aug 5, 2019 in Puppet by Sirajul
 • 59,230 points • 1,375 views
+2 votes
1 answer

After learning AWS architecture solutions - Is docker and kubernetes sufficient to get a better job

Hey @Diwakar, Once you know AWS, it's ...READ MORE

Aug 5, 2019 in Career Counselling by Kalgi
 • 52,360 points • 3,167 views
0 votes
0 answers

How do you use an else clause in a while loop in python?

Can you give an example? READ MORE

Aug 5, 2019 in Python by Waseem
 • 4,540 points • 428 views
0 votes
0 answers

What is the syntax for an empty while loop in python?

What kind of ambiguities are expected for ...READ MORE

Aug 5, 2019 in Python by Waseem
 • 4,540 points • 611 views
0 votes
1 answer

Get all tags from taggit

You can use all() to get all the tags ...READ MORE

Aug 5, 2019 in Python by SDeb
 • 13,300 points • 2,233 views
0 votes
1 answer

Python: is thread still running

The key is to start the thread ...READ MORE

Aug 5, 2019 in Python by SDeb
 • 13,300 points • 5,415 views
0 votes
0 answers

Graph with NA values

What happens when the dataframe containing missing ...READ MORE

Aug 5, 2019 in Data Analytics by anonymous
 • 385 views
0 votes
1 answer

How to sort substring from a dataframe

First, extract the substring from the data ...READ MORE

Nov 4, 2019 in Data Analytics by Cherukuri
 • 33,030 points • 910 views
+2 votes
0 answers

I am trying to create mininet, but I cannot ping all host and switch

I am trying to do mininet environment ...READ MORE

Aug 4, 2019 in Python by Jiun-Jung
 • 140 points • 2,178 views
+1 vote
1 answer

i have shut down all my project on google cloud platform, will any charges be deducted from my debit card after one years ?

Hey @Keyur Aghera, You get to use ...READ MORE

Aug 5, 2019 in GCP by Kalgi
 • 52,360 points • 1,934 views
0 votes
1 answer

Can we run parallel jobs in Ansible

Running parallel tasks in Ansible is not ...READ MORE

Aug 5, 2019 in Ansible by Kalgi
 • 52,360 points • 4,719 views
0 votes
0 answers

Selectively color fill in Crosstab

How to selectively color fill in cells ...READ MORE

Aug 4, 2019 in Tableau by anonymous
 • 455 views
+1 vote
2 answers

Hadoop Administration

Make the following changes to your configuration ...READ MORE

Aug 5, 2019 in Big Data Hadoop by Simran
 • 735 views
+1 vote
0 answers

where to put tf files while building servers from terraform.. its creating only workspace.

# kitchen create -----> Starting Kitchen (v2.2.5) -----> Creating ...READ MORE

Aug 4, 2019 in Others by Priyanka
 • 460 views
+1 vote
0 answers

How to get data from tables using java code - amazon DynamoDB

public void listAllCourses(@QueryParam("author") String authorQuery) { ...READ MORE

Aug 3, 2019 in AWS by Girija
edited Aug 5, 2019 by Kalgi • 1,600 views
+1 vote
1 answer

hyperledger fabric: can't find package: github.com/pkg/errors in GOPATH or GOROOT

Hey @aiga, try to add the package ...READ MORE

Aug 5, 2019 in Blockchain by Esha
 • 1,859 views
+1 vote
1 answer

display the count of rows matching some criteria

Do you want to show a table ...READ MORE

Aug 5, 2019 in Power BI by anonymous
 • 33,030 points • 988 views
0 votes
0 answers

Transition matrix to have percentages instead of default probability - Markov chain

While using Markov chain, is it possible ...READ MORE

Aug 3, 2019 in Machine Learning by Laksha
 • 714 views
0 votes
1 answer

Setting up checkpoint dir: PySpark Data Science

You can follow the below steps: Change the ...READ MORE

Aug 2, 2019 in Data Analytics by Zulaikha
 • 910 points • 5,682 views
0 votes
1 answer

Data Science: Integrating RStudio to DashDB

You can connect dashDB to RStudio by ...READ MORE

Aug 2, 2019 in Data Analytics by hussain
 • 420 views
0 votes
1 answer

How to use add_tally() and add_count()

Hey, add_tally and add_count returns the count of ...READ MORE

Sep 10, 2019 in Data Analytics by Cherukuri
 • 33,030 points • 4,362 views
0 votes
2 answers

Please explain me the difference between scanner and the buffer reader?

As per your question for reading a ...READ MORE

Aug 27, 2019 in Java by Sirajul
 • 59,230 points • 3,450 views
0 votes
1 answer

How Foreach Operation works in Apache Spark?

Hi, foreach() operation is an action. It does not ...READ MORE

Aug 2, 2019 in Apache Spark by Gitika
 • 65,910 points • 6,036 views
0 votes
1 answer

How to convert Python Datetime to String without microsecond component?

If you want to format a datetime object in ...READ MORE

Aug 2, 2019 in Python by Shabnam
 • 930 points • 1,971 views
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