Dictionary of commands of HADOOP with sample statement/usage and
description. Minimum of 20 pls
Answers
Answer:
Here is a simple dictionary of common Hadoop commands with usage and description:
hdfs dfs -ls : Lists the contents of a directory in HDFS Usage: hdfs dfs -ls /path/to/directory Example: hdfs dfs -ls /user/hadoop/data/
hdfs dfs -put : Puts a file into HDFS Usage: hdfs dfs -put localfile /path/to/hdfsfile Example: hdfs dfs -put /local/path/to/file /user/hadoop/data/
hdfs dfs -get : Retrieves a file from HDFS and stores it in the local filesystem Usage: hdfs dfs -get /path/to/hdfsfile localfile Example: hdfs dfs -get /user/hadoop/data/file.txt /local/path/to/file.txt
hdfs dfs -cat : Displays the contents of a file in HDFS Usage: hdfs dfs -cat /path/to/hdfsfile Example: hdfs dfs -cat /user/hadoop/data/file.txt
hdfs dfs -rm : Removes a file or directory from HDFS Usage: hdfs dfs -rm /path/to/hdfsfile Example: hdfs dfs -rm /user/hadoop/data/file.txt
hdfs dfs -mkdir : Creates a directory in HDFS Usage: hdfs dfs -mkdir /path/to/directory Example: hdfs dfs -mkdir /user/hadoop/output/
hdfs dfs -chmod : Changes the permissions of a file or directory in HDFS Usage: hdfs dfs -chmod [-R] <MODE[,MODE]... | OCTALMODE> PATH... Example: hdfs dfs -chmod 777 /path/to/hdfsfile
hdfs dfs -chown : Changes the owner of a file or directory in HDFS Usage: hdfs dfs -chown [-R] [OWNER][:[GROUP]] PATH... Example: hdfs dfs -chown hadoop:hadoop /path/to/hdfsfile
These commands can be used with the Hadoop command line interface (CLI) or via a programming language like Java.
Explanation:
Related Questions
Forces always act in equal and opposite pairs
Answers
Is a diesel truck less expensive to drive than a gas truck?
Answers
Answer:
Typically, diesel trucks cost more than those with gas engines, especially when you're first buying them, as diesel is usually featured as an add-on for gas-powered cars. Diesel add-ons can cost over $5,000 for midsize trucks and around $10,000 for heavy-duty trucks.
Explanation:
Make me brain pls
4. Employees are not responsible for thelr own safety whlle at work.
A) O True
B) O False
Answers
The statement "Employees are not responsible for their own safety while at work" is false because Employees most certainly are responsible.
What is Occupational safety?A multidisciplinary discipline dealing with the safety, health, and welfare of individuals at work is known as occupational safety and health, often known as occupational health and safety, occupational health, or occupational safety.
An environment that is safe and healthy for workers may minimize injury and sickness expenses, lower levels of absenteeism, boost output and quality, and improve employee morale. In other words, safety benefits the business.
Thus, the statement "Employees are not responsible for their own safety while at work" is false because Employees most certainly are responsible.
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"Como define al ser Humano, la Religión, la biología y la filosofía." y es religion Y urgenteeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answers
Explanation:
Los seres humanos siempre han tenido la necesidad de explicar y comprender los hechos sobre el mundo, ellos mismos y la naturaleza. La religión se configura como un conjunto de creencias comunes a una comunidad, que busca conectar al hombre con una fe en una divinidad superior que explique una visión y construcción del mundo. En sentido antropológico, la religión es una construcción evolutiva de parámetros sociales y dogmáticos como búsqueda de la creación de un sentido de pertenencia social, además de la búsqueda de la comprensión de uno mismo y del desarrollo espiritual.
La biología y la filosofía surgen como conceptos amplios que buscan explicar otros conceptos sobre la ciencia de manera sistemática, diferente a buscar una comprensión del mundo a través de la religión. La filosofía como concepto de que el hombre puede comprender el mundo a través de sus propias visiones y descubrimientos, desarrollando el pensamiento crítico y la búsqueda del conocimiento, que desarrolló las ciencias, entre ellas la biología que ayudó en la comprensión de parámetros esenciales para la calidad de vida humana, como la medicina por ejemplo.
Entonces hay una convergencia de los conceptos de religión, biología y filosofía, y es posible que el hombre crea en cada uno sin que el otro concepto se vea afectado.
20 POINTS
An engineer is summoned to increase the efficiency of a hydraulic power system. The system contains many valves that have been susceptible to wear. In order to increase the efficiency, he replaces the valves with an actuator.
TRUE OR FALSE
Answers
Answer:
True ...................
Answer:
True
Explanation:
Took da quiz 100%
NEED IT URGENT IN C++/JAVA. PLEASE DO IT FAST.
Given a LinkedList, where each node contains small case characters, you he asked to form a strong password is chancers & the one in which no two characters are repeating The output password must be a continuous subset of the given Lidd Find the length of the strongest password that can be formed using the input takes
Example 1
inputs - abc-abc>bəb
Output 3
Explanation: The ariewer is abc, with the length of 3.
Example 2:
Input spowow>k->e-w
Output 3
Explanation: The answer is w-k-e, with the length of 3 Notice that the answer must be a continuous subset, powke is a subset and not a continuous subset
Expected Time Complexity: O(n)
Expected Space Complexity: O(1)
Answers
The time complexity of this solution is O(n), where n is the length of the input string, as we iterate through the string once. The space complexity is O(1), as the extra space used is constant regardless of the input size.
Here's the solution in Java that meets the given requirements:
import java.util.*;
public class StrongPasswordSubset {
public static int findStrongPasswordSubsetLength(String input) {
int maxLength = 0;
int currentLength = 0;
int[] charCount = new int[26];
for (int i = 0; i < input.length(); i++) {
char c = input.charAt(i);
if (charCount[c - 'a'] > 0) {
Arrays.fill(charCount, 0);
currentLength = 0;
}
charCount[c - 'a']++;
currentLength++;
maxLength = Math.max(maxLength, currentLength);
}
return maxLength;
}
public static void main(String[] args) {
String input1 = "abc-abc>bəb";
int result1 = findStrongPasswordSubsetLength(input1);
System.out.println("Input: " + input1);
System.out.println("Output: " + result1);
String input2 = "spowow>k->e-w";
int result2 = findStrongPasswordSubsetLength(input2);
System.out.println("Input: " + input2);
System.out.println("Output: " + result2);
}
}
This solution uses an array charCount to keep track of the count of each character encountered so far. Whenever a character is encountered that has already appeared before, it resets the charCount array and the current length of the subset. The maximum length seen so far is updated at each step. The final result is the maximum length of the strong password subset.
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A good place to get hints about how to answer a response question could be
a.
Your teacher
c.
Both of these
b.
The rest of the test
d.
None of these
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
I think its A
Explanation:
...............................
You have a 12-inch PVC water main that is 850 feet long flowing at 5.6 cfs. Point A is at an elevation of 750 ft. Point B is at an elevation of 765 ft. If the pressure in a water main at Point A is 85 psi, what is the pressure at point B, in psi? (5 points)
Answers
Known :
D = 12 in = 1 ft
L = 850 ft
Q = 5.6 cfs
hA = 750 ft
hB = 765 ft
PA = 85 psi = 12240 lb/ft²
Solution :
A = πD² / 4 = π(1²) / 4
A = 0.785 ft²
Velocity of water :
U = Q / A = 5.6 / 0.785
U = 7.134 ft/s
Friction loss due to pipe length :
Re = UD / v = (7.134)(1) / (0.511 × 10^(-5))
Re = 1.4 × 10⁶
(From Moody Chart, We Get f = 0.015)
hf = f(L / d)(U² / 2g) = 0.015(850 / 1)((7.134²) / 2(32.2))
hf = 10 ft
PA + γhA = PB + γhB + γhf
PB = PA + γ(hA - hB - hf)
PB = 12240 + (62.4)(750 - 765 - 10)
PB = 10680 lb/ft²
PB = 74.167 psi
Samantha is about to enter an 8-foot deep manhole. What must be onsite before she enters?a. A mechanical device to retrieve herb. EMT personnel to rescue herc. The attendant and the relieverd. The engineering team
Answers
EMT personnel to rescue her must be onsite before she enters. Thus option B is correct.
What is EMT?EMTs are equipped with the fundamental information and abilities needed to stabilize and transfer successfully prepared in a variety of situations, from regular medical transport and non-emergencies to soul ones.
As there will be a change that will be present with the way the diagnosis was to be found. This EMT will help a safe journey. It is necessary to test the environment using instruments made to find any potential toxins and gases.
Therefore, option B is the correct option.
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Provide a reasonable description of the sample space for each of the random experiments in Exercises 2-1 to 2-17. There can be more than one acceptable interpretation of each experiment. Describe any assumptions you make. Each of three machined parts is classified as either above or below the target specification for the part. Let a and b denote a part above and below the specification, respectively.S = {aaa, aab, aba, abb, baa, bab, bba, bbb}
Answers
It is believed that there are only two possibilities classifications for each component: above or below the goal specification.
How do you describe potential?Legislation can communicate possibility using verb tenses like can, could, may, and could as well as statements that contain the words likely, feasible, and its derivatives. There's a slight chance I'll miss the performance. "There are endless chances with your new job."
Should a possibility be expressed?Should and ought to can be used to refer to things that are likely to occur, anticipated to occur, or true: By this afternoon, we should/ought to be finished. You ought to hear back within the following week.
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Which claim does president Kennedy make in speech university rice ?
Answers
Answer: The United States must lead the space race to prevent future wars.
Explanation: Hope this helps
Answer:
The risk associated with entering the space race outweighs the possible benefits.
Explanation:
It's explaining it in the speech.
The surface of an object is the
texture value appearance or function
Answers
in the bendix rsa fuel injection system, which chamber in the regulator unit will have the lowest air pressure?
Answers
In the Bendix RSA fuel injection system, the chamber in the regulator unit that will have the lowest air pressure is typically the reference or atmospheric chamber.
The regulator unit in the Bendix RSA fuel injection system is designed to maintain a constant fuel pressure to the fuel injector nozzles. It does this by controlling the air pressure that acts on the diaphragm, which in turn controls the position of the fuel metering valve. The regulator unit has two chambers - the fuel chamber and the air bleed chamber.
The air bleed chamber is connected to the air intake system and is exposed to the air pressure in the intake manifold. This means that the pressure in the air bleed chamber will vary depending on the engine speed and load. At high engine speeds and loads, the air pressure in the air bleed chamber will be lowered, which will cause the fuel metering valve to open more and deliver more fuel to the engine.
Therefore, the air bleeds chamber in the regulator unit of the Bendix RSA fuel injection system will have the lowest air pressure.
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In mechanics of materials, the bending stress of a beam in bending can be determined by the equation σ = MyIwhere expressed in terms of SI base units M is the bending moment in Newton-meters (N-m), y is the distance from the neutral axis in meters (m), and I is the moment of inertia in meters to the fourth power (m4). The bending stress σ has the same units as those of:_____.a) pressure.b) density.c) force.d) spring constant.
Answers
Answer:
Explanation:
In mechanics of materials, the bending stress of a beam in bending can be determined by the equation
innovative ideas for civil engineering individual project? I'm running out of time. Need to submit and get approval for this. Please help me and give me a new title to research.
For an egsample- Investigation of replacing Ricehusk instead of Sand in C30, Like wise
Answers
Answer:
Top Final year projects for civil engineering students
• Geographic Information System using Q-GIS. ...
• Structural and Foundation Analysis. ...
• Construction Project Management & Building Information Modeling. ...
• Tall Building Design. ...
• Seismic Design using SAP2000 & ETABS.
Explanation:
Hope it's help
technician a states that a trigger helps stabilize a waveform. technician b states that if a trigger is misplaced, the waveform can be unstable or not seen. who is correct? technician a technician b both technicians neither technician
Answers
Technician B only
What is External Trigger Source?An input voltage is applied to the external input jack. This is the BNC input labeled EXT TRIG IN at the bottom right corner of the horizontal trigger section of the LS1020 oscilloscope shown in Figure 3.35. The voltage applied to this input is used to trigger the sweepTriggers are the method by which an oscilloscope synchronises the voltage and time data of your waveform, enabling you to view your signal fixed to a voltage/time point to analyse it furtherIn auto trigger mode, the trigger will be forced if the specified conditions are not met. In normal trigger mode, the trigger will never be forced and a trigger will only occur if the specified conditions are met.
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A horizontal force P is applied to a 130 kN box resting on a 33 incline. The line of action of P passes through the center of gravity of the box. The box is 5m wide x 5m tall, and the coefficient of static friction between the box and the surface is u=0.15. Determine the smallest magnitude of the force P that will cause the box to slip or tip first. Specify what will happen first, slipping or tipping.
Answers
Answer:
SECTION LEARNING OBJECTIVES
By the end of this section, you will be able to do the following:
Distinguish between static friction and kinetic friction
Solve problems involving inclined planes
Section Key Terms
kinetic friction static friction
Static Friction and Kinetic Friction
Recall from the previous chapter that friction is a force that opposes motion, and is around us all the time. Friction allows us to move, which you have discovered if you have ever tried to walk on ice.
There are different types of friction—kinetic and static. Kinetic friction acts on an object in motion, while static friction acts on an object or system at rest. The maximum static friction is usually greater than the kinetic friction between the objects.
Imagine, for example, trying to slide a heavy crate across a concrete floor. You may push harder and harder on the crate and not move it at all. This means that the static friction responds to what you do—it increases to be equal to and in the opposite direction of your push. But if you finally push hard enough, the crate seems to slip suddenly and starts to move. Once in motion, it is easier to keep it in motion than it was to get it started because the kinetic friction force is less than the static friction force. If you were to add mass to the crate, (for example, by placing a box on top of it) you would need to push even harder to get it started and also to keep it moving. If, on the other hand, you oiled the concrete you would find it easier to get the crate started and keep it going.
Figure 5.33 shows how friction occurs at the interface between two objects. Magnifying these surfaces shows that they are rough on the microscopic level. So when you push to get an object moving (in this case, a crate), you must raise the object until it can skip along with just the tips of the surface hitting, break off the points, or do both. The harder the surfaces are pushed together (such as if another box is placed on the crate), the more force is needed to move them.
Identify the prefixes used in the International System of
Units (SI)
Meaning
Prefix
Meaning
Prefix
1/1,000,000
1,000,000
1/1,000
1,000
1/100
100
1/10
10
nce
Answers
Answer:
i need points 425677
Explanation:
yurrrrrr awnser C
Water is pumped from a lake to a storage tank 18 m above at a rate of 70 L/s while consuming 20.4 kW of electric power. Disregard any frictional losses in the pipes and any changes in kinetic energy, determine (a) the overall efficiency of the pump-motor unit (5-point), and (b) the pressure difference between the inlet and the exit of the pump (5-point).
Answers
Part A
For each method,a function to model the expected number of plants for each year
Part B
Use the Functions to Find the expected number of plants in 10 years for each method.
Part C
A rocket is launched from rest with a constant upwards acceleration of 18 m/s2. Determine its velocity after 25 seconds
Answers
Answer:
The final velocity of the rocket is 450 m/s.
Explanation:
Given;
initial velocity of the rocket, u = 0
constant upward acceleration of the rocket, a = 18 m/s²
time of motion of the rocket, t = 25 s
The final velocity of the rocket is calculated with the following kinematic equation;
v = u + at
where;
v is the final velocity of the rocket after 25 s
Substitute the given values in the equation above;
v = 0 + 18 x 25
v = 450 m/s
Therefore, the final velocity of the rocket is 450 m/s.
What's the difference between a scale and a scale drawing?
Answers
scale is used to make a scale drawing. every scale drawing has it's sclae written for proper interpreatation
What is a scale?
A Scale is the ratio of a sketched model and the actual measuremnts while a scale drawing is a sketched model that was carefully made such that every measurement in the sketch could be represented to the site or actual mearuement through the scale with very little or no error
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To make a scale drawing, scale is used. For correct interpretation, every scale drawing has its own scale inscribed on it.
What exactly is a scale?A scale drawing is a sketched model that has been meticulously prepared so that every measurement in the sketch may be conveyed to the site or actual measurement through the scale with very little or no mistake.
A weighing apparatus or equipment with two pans of equal weight hung from its ends —usually used in the plural, either pan or tray of a balance scale.
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What do we need to build a car?
Answers
Please help I need by today !!
What is the purpose of an engineering notebook ?
What is the purpose of a portfolio?
Answers
Discuss the relation between the force exerted and pressure.
Answers
Answer:
When a force is exerted on an object it can change the object's speed, direction of movement or shape. Pressure is a measure of how much force is acting upon an area. Pressure can be found using the equation pressure = force / area. Therefore, a force acting over a smaller area will create more pressure
Explanation:
hope it will become helpful to you ☺️☺️
Consider a solid round elastic bar with constant shear modulus, G, and cross-sectional area, A. The bar is built-in at both ends and subject to a spatially varying distributed torsional load t(x) = p sin( 2π L x) , where p is a constant with units of torque per unit length. Determine the location and magnitude of the maximum internal torque in the bar.
Answers
Answer:
\(\t(x)_{max} =\dfrac{p\times L}{2\times \pi}\)
Explanation:
Given that
Shear modulus= G
Sectional area = A
Torsional load,
\(t(x) = p sin( \frac{2\pi}{ L} x)\)
For the maximum value of internal torque
\(\dfrac{dt(x)}{dx}=0\)
Therefore
\(\dfrac{dt(x)}{dx} = p cos( \frac{2\pi}{ L} x)\times \dfrac{2\pi}{L}\\ p cos( \frac{2\pi}{ L} x)\times \dfrac{2\pi}{L}=0\\cos( \frac{2\pi}{ L} x)=0\\ \dfrac{2\pi}{ L} x=\dfrac{\pi}{2}\\\\x=\dfrac{L}{4}\)
Thus the maximum internal torque will be at x= 0.25 L
\(t(x)_{max} = \int_{0}^{0.25L}p sin( \frac{2\pi}{ L} x)dx\\t(x)_{max} =\left [p\times \dfrac{-cos( \frac{2\pi}{ L} x)}{\frac{2\pi}{ L}} \right ]_0^{0.25L}\\t(x)_{max} =\dfrac{p\times L}{2\times \pi}\)
The UHRS platform is optimized for Edge/Internet Explorer only. You can still use your favorite browser, but keep in mind that you may experience technical issues when working on UHRS with a different browser than Edge or Internet Explorer.
UHRS is optimized for...
Answers
It is to be noted that all UHRS platforms are optimized for the popular kinds of internet browser applications.
What is a UHRS?The Universal Human Relevance System (UHRS) is a crowdsourcing platform that allows for data labeling for a variety of AI application situations.
Vendor partners link people referred to as "judges" to offer data labeling at scale for us. All UHRS judges are bound by an NDA, ensuring that data is kept protected.
A browser is a software tool that allows you to see and interact with all of the knowledgeon the World Wide Web. Web sites, movies, and photos are all examples of this.
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Identify this instrument.
Refracting telescope
Reflecting telescope
Microscope
Radio Telescope
Answers
With the acceleration depicted in Fig. 2, a particle travels along a straight path. Plot the v-t and x-t curves for 0 < 150 < 15s. If the particle starts from the origin with an initial velocity of vo = -14 m/s, calculate (a) the particle's maximum velocity and (b) the particle's maximum position coordinate.
Answers
Answer: Your welcome!
Explanation:
The v-t curve for this situation is shown in Figure 3. The particle starts at t=0 with an initial velocity of -14 m/s and then gradually accelerates until it reaches a maximum velocity of 16 m/s at t=15s.
The x-t curve for this situation is shown in Figure 4. The particle starts at t=0 at the origin and then gradually moves in the positive direction due to the acceleration. The maximum position coordinate of the particle is 180 m at t=15s.
(a) The particle's maximum velocity is 16 m/s.
(b) The particle's maximum position coordinate is 180 m.
What can be defined as the planning, coordination, and communications functions that are needed to resolve an incident in an efficient manner?
Answers
Incident handling can be defined as the planning, coordination, and communications functions that are needed to resolve an incident efficiently.
What is incident handling?In the areas of computer protection and transmission technology, computer safety incident surveillance involves the monitoring and detection of security occurrences on a computer or computer network and the execution of proper answers to those circumstances. Especially, a happening reaction process is an assemblage of strategies aimed at identifying, analyzing, and responding to potential security happenings in a way that underestimates impact and supports rapid comeback. Incident handling is a systematic set of recovery tactics for the restoration of organizational security. Given that adversaries have already damaged the institution's protection, this healing is always time-critical and usually stressful.To learn more about Incident handling, refer to:
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Of the following, which are the most important parts on any vehicle?
a) wheel bearings
b)Tires
c) windshield wipers
d) Spurving bearings
Answers
Answer:
tires
Explanation:
without tyres you can not drive.
Answer:
d spurving bearings
Explanation:
because IN a car you can't move without them.in the old days they were using wood as tires