HDFS Fedaration Tutoria

HDFS Federation in Hadoop web based preparing builds up the HDFS design in Hadoop classes over an unmistakable partition of capacity and namespace, empowering Generic piece stockpiling layer, it licenses bolster for some namespaces in The bunch to create confinement and versatility.

The presentation of HDFS alliance in Hadoop preparing Hyderabad:

HDFS alliance is one of the parts in Hadoop online training.Learn Hadoop organization having capacity layer and namespace layer. It permits the piece stockpiling layer. It additionally builds up the engineering of HDFS The current HDFS design has two sections in online Hadoop preparing.

1. Namespace

2. Square Storage

Namespace: This layer control registries, records, and squares. This layer permits the Basic document framework operations for instance formation of records, posting of records, cancellation Of documents, change of documents, envelopes, for HDFS organization in Hadoop preparing

Square stockpiling: The piece stockpiling has two sections 1.block administration

2.Physical capacity

1. Piece administration: This deals with the information hubs in bunch and accessibility of Operation like adjustment, erasure, creation, and hunt.

2. Physical capacity: This stores the pieces and gives access to compose Or read operationsThese are the two sections of HDFS league in Hadoop web based preparing.

Set up HDFS Architecture in Hadoop web based preparing:

In the present HDFS Architecture, we have just a single namespace for a whole bunch that is Managed by single name hub. Utilizing this we will set up the HDFS design. Learn Hadoop league can characterize the propelled engineering to beaten the restrictions Of current HDFS usage.

A portion of the constraints of HDFS Architecture in online Hadoop preparing given beneath

1. coupled Block Storage and Namespace

2. Namespace Scalability

3. Execution

4. Seclusion

HDFS alliance in Hadoop web based preparing organizations in Hyderabad:

Learn Hadoop alliance permits scaling and name benefit. It utilizes a few name hubs which

Are autonomous of each other, these free name hubs are unify. These information hubs

utilized As regular stockpiling by all the name hubs, every information hub enlisted with all the name

hubs In the group One namespace and its square are alluding as Namespace Volume. At the point when

the namespace is Deleted the equivalent square pool at the information hub erased, during the time spent

bunch up degree, each namespace volume overhauled as a unit.

Advantages of learning Hadoop Federation:

Nonexclusive Storage Service:

Read More: Kosmik

HDFS Fedaration

What is HDFS federation? In Hadoop online training in Hyderabad:


HDFS Federation in Hadoop online training develops the HDFS architecture in Hadoop classes across a clear separation of storage and namespace, enabling Generic block storage layer, it permits support for many namespaces in The cluster to develop isolation and scalability.

The introduction of HDFS federation in Hadoop training Hyderabad:

HDFS federation is one of the parts in Hadoop online training.Learn Hadoop federation having storage layer and namespace layer. It allows the block storage layer. It also develops the architecture of HDFS The current HDFS architecture has two parts in online Hadoop training.

1. Namespace
2. Block Storage


Namespace: This layer control directories, files, and blocks. This layer allows  the Basic file system operations for example creation of files, listing  of files, deletion Of files, modification of files, folders, for HDFS   federation in Hadoop training


Block storage: The block storage has two parts      1.block management
                                                                         2.Physical storage
                                           
1. Block management: This manages the data nodes in cluster and availability of  Operation like modification, deletion, creation, and search.

2. Physical storage: This stores the blocks and provides access for write Or read operationsThese are the two parts of HDFS federation in Hadoop online training.


Put in place HDFS Architecture in Hadoop online training:

In the present HDFS Architecture, we have only one namespace for an entire cluster that is Managed by single name node. Using this we will put in place the HDFS architecture. Learn Hadoop federation can define the advanced architecture to beaten the limitations Of current HDFS implementation.

Some of the limitations of HDFS Architecture in online Hadoop training given below

1. coupled Block Storage and Namespace
2. Namespace Scalability
3. Performance
4. Isolation


HDFS federation in Hadoop online training institutes in Hyderabad:

Learn Hadoop federation allows scaling and name service. It uses several name nodes which
Are independent of each other, these independent name nodes are federate. These data nodes
used As common storage by all the name nodes, each data node registered with all the name
nodes In the cluster One namespace and its block are referring as Namespace Volume. When
the namespace is Deleted the equal block pool at the data node deleted, in the process Of
cluster up gradation, each namespace volume upgraded as a unit.


Benefits of learning Hadoop Federation:


Generic Storage Service:

The block level pool consideration allows the architecture to build New file systems on top of block storage. We can build new applications On the block storage layer without using the  file system interface

Scalability and Isolation:

 Many name nodes scale up in the file system namespace. The namespace volumes are separate for categories of application  and users And provides absolute isolation.

Simple Design:

 namespaces and Name nodes are independent of each other. Existing name  nodes required for changing the design This requires changing the existing name nodes. Each name node built to be robust.Federation is also backward compatible.


Hadoop online training in Hyderabad:

Kosmik Technologies provides Hadoop online training in Hyderabad. we provide the best faculty
for Hadoop training And we provide certification for particular courses.

Objects Identification in Selenium

 

Object Identification in Selenium & Selenium online training in Hyderabad:

We are testing various applications when we learn selenium, means application Under test, if we want to identify the object it made of. All applications are Either desktop applications or web applications in selenium training. These Applications are consisting of various objects given below.

1.Text Box
2.Button
3.Radio Button
4.Link
5.Drop Down
6.Slider
7.List Box

In selenium online classes, object identification is most of the automation activity. Automation people should be able to identify the objects in selenium online training. To identify the objects in selenium training we have to use the concept of LOCATORs.

The objects identifying which used in automating the test cases using Selenium training.

Some of the Locators in selenium online training:

Name

1. ID
2. Class
3. XPath
4. CSS
5. DOM
6. Tag Name
7. Filters
8. Link Text

These are the locators in selenium online training in Hyderabad.

Locator elements in selenium online classes:

We expect to result in locator for finding an element in on line selenium training. The elements are

Listed below

• By.id(id)
• By.name(name)
• By. Path(path)
• By.cssSelector(selector)
• By. class(class)
• By.tagName(name)
• By.linkText(link Text)
• By.partialLinkText(partialLinkText)

Most used locators in selenium classes are XPath and CSS. This is the easy way to identify the object of the application which  Is built on Firefox. But same on the other way if the application Is made on IE browser then it is difficult to identify the Object.

.

Some of the Locators in selenium online training:

• Name
• ID
• Class
• XPath
• CSS
• DOM
• tagName
• Filters
• Link Text

These are the locators in selenium online training in Hyderabad.


Locator elements in selenium online classes:

We expect to result in locator for finding an element in on line selenium training. The elements are Listed below

• By.id(id)
• By.name(name)
• By. path(path)
• By.cssSelector(selector)
• By. Class(class)
• By.tagName(name)
• By.linkText(link Text)
• By.partialLinkText(partialLinkText)

Most used locators in selenium classes are XPath and CSS.

This is an easy way to identify the object of the application which  Is built on Firefox. But same on the other way if the application  Is made on IE browser then it is difficult to identify the Object.

We have various tools for identifying in selenium online training the objects  On different browsers like chrome, firefox,.

• Fire Finder
• Firebug
• XPath Checker 
• IE Developer Toolbar

If we are using online Selenium IDE there are various ways to identifying the  Objects. By default learn Selenium identify the object using Name or ID The order of identifying the object in Selenium IDE online training is following

1. Nam
2. ID
3. CSS
4. XPath Absolute
5. XPath Relative
6. XPath Attributes

Selenium online training in Hyderabad:

Kosmik Technologies provides Selenium online training in Hyderabad, we provide  Learn selenium online classes. We have expert faculty provide for  Selenium online training in Hyderabad. It is the nice place to learn selenium and  We provide certification for particular course.

Introduction to Automation Framework

 

Automation framework Selenium online Training in Hyderabad:

We move over in the Selenium series, we should think our focus towards Automation Framework creates in the next few upcoming frameworks. We would Also light on various features of an Automation framework, types of  Automation frameworks, advantages of using the framework and the basic components That form an Automation framework.

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What is Framework? And learn selenium online training:

Framework is  considered to be set of rules, standards protocols And guidelines that can  follow as whole so on leverage  The benefits of the support provided by the Framework, We learn selenium then it also provides support for framework

Example:

We often use elevators. There are few guidelines those  entered within  The elevator to  followed and taken care off so about leverage the most  Benefit and prolonged service from the system

Test Automation Framework:

Test Automation Framework is scaffolding that is laid to provide an execution Environment for the automation test scripts, the framework provides the user With various benefits that help them to develop, execute and report the automation  Test scripts. It is more like a system that has created  To automate our tests

In simple language, we can say that framework is constructive blend of various Guidelines, practices, concepts, processes, coding standards, modularity, Project hierarchies, reporting mechanism, test data injections etc. to pillar Automation testing 

The advantages can be in different forms like ease of scripting, modularity,

Scalability, process definition, understandability, reusability cost, maintenance etc.
Thus, to be able to grab these benefits, developers  advised using one or more
Of the Test Automation Framework

The advantage of Test Automation framework:

1. Greatest coverage

2. Reusability of code

3. Minimal manual intervention

4. Recovery scenario

5. Easy Reporting

6. Low-cost maintenance

Types of Test Automation Framework:

We have basic idea of what is an Automation Framework, in this section, we would give
Introduction you with the different types of Test Automation Frameworks those are available
In the marketplace, There is the different range of Automation Frameworks available. These frameworks may vary  From each other based on their support to various key factors to doing automation like  Reusability, ease of maintenance

Let us discuss the few most used Test Automation Frameworks:

1. Behavior Driven Development Framework

2. Data Driven Testing Framework

3. Library Architecture Testing Framework

4. Hybrid Testing Framework

5. Keyword Driven Testing Framework

6. Module Based Testing Framework

Data Flow Trnsformation

 

Data Flow Transformation and MSBI online Training in Hyderabad:

Data Transformation defined as core component in the Data flow of package In SSIS, It is part of the data flow to which we apply our business logic To change and manipulate the input data into the required format before Loading

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Different types of data Transformations available in SSIS.

1. TOTAL: The transformation applies total functions to Copies and column values the results of the                     transformation Output, besides total functions, the transformation provides GROUP  BY                  clause, which you can use to specify groups to add  Across, The Transformation supports                  following operations, AVERAGE, LARGEST, SMALLEST, COUNT, SUM, COUNT                      DISTINCT, GROUP BY  An example of Total Transformation:


2. AUDIT: Task-level Metadata and Adds Package such as Package Name, Execution  Instance,                            Machine Name, Package ID, etc

3. UNPIVOT: Used for demoralizing the data structure by converts columns into rows  In case of                            building Data Warehouses

4. COPY COLUMN: Add copy of column to the output, we can later transform the  Copy keeping the                                 original for auditing

5. CHARACTER MAP: Character Map Transformation is very useful, used to convert data. When it                                      comes to string formatting in SSIS  Upper case, lower case

6. EXPORT COLUMN: Used to export an Image specific column from the database  To flat file

7. DATA CONVERSION: Converts columns data types from one to another type. It stands for                                                  Explicit Column Conversion
.
8. DERIVED COLUMN: Create new column from given expressions.

9. FUZZY LOOKUP: Used for Pattern Matching and Ranking based on fuzzy logic.

10. CONDITIONAL SPLIT: used to split the input source data based on condition.

11. DATA MINING QUERY:  It Used to perform data mining query over   analysis  

                                             Services and manage Predictions Graphs and Controls.

12. FUZZY GROUPING: Groups the rows in the dataset that contain similar values.

13. IMPORT COLUMN: Reads image specific column from the database onto a flat file.

14. LOOKUP Performs the lookup of a given reference object set to a data  Source, it used to find exact matches.

15. MERGE: Merges two sorted data sets of same column structure into a single output.

16. MERGE JOIN: Merges two sorted datasets into a single dataset using a join.

17. MULTICAST, it used to create or distribute exact copies of the source dataset  To one or more                                 destination datasets

18. ROW COUNT: Stores the resulting row count from the data flow or transformation  Into different rows.

19.  ROW SAMPLING: Captures sample data by using row count of the rows in Dataflow specified by rows or percentage.

20. UNION ALL: Merge many datasets into a single dataset.

21. PIVOT: Used for Normalization of data sources to reduce by Converting rows into columns


Different Types of data Transformation with examples:


Row Transformation: Each value manipulated. In Run transformation, The buffers can reuse for other                                 purposes like following OLEDB Data Destinations, OLEDB Data source Other                                 blocking transformations within the package, Other Row transformation within                                 the package

Examples of Row Transformations: Audit, Copy Column, Character Map


2. Blocking Transformation:

These can use the buffer space allocated for available Row transformation and get new buffer space allocated only for Transformation

Examples: Merge, Multicast, Export, Column, Lookup, Import, Conditional Split

3. Blocking Transformation:

It will make use of reserve buffer and does not share buffer space from  Other transformation.


Examples: Total, Sort, Cache Transformation

Why we should choose for Selenium Automated Testing

 Selenium Automated Testing: 

Why you should choose for

 Your business website or web application developed, it is time to go for Testing to check whether the site works well on various devices having Various screen sizes or not. This task can take more time if there is no Access to more tools, Stable manual testing phase, every business organization Plans to go for automated tests so to save the costs that involved in Manual testing once the application reaches. Since this is an important factor  For a project development, organizations are looking for open source automation Tools instead of making investments in costly commercial tools Open source testing tools are available for different types of testing like the  Regression, UAT, functional, performance act..... These open source tools have Developed a lot and so it is time to think of the best automation tool that decides  That your website functions well on devices.




Selenium Automated Testing online training in Hyderabad:

 Kosmik Technologies provides selenium online training in Hyderabad, along with other Online selenium training, we provide best faculty and certification, it is nice  A place to learn selenium. The 


open source advantage of learning selenium automated testing tool:

Selenium testing tool is open source software and this permits the users to  Change, extend, and share the code is available. It is used for programmers to  Save a lot of effort and time and thereby develop the productivity. They can Also, use makes to order functions for better readability and manageability of  The codes

Platform portability:

Automated testing is the repetitive process and even a small modification that Is made in the code needs to tested to decide that the software is offering  The desired results and functionalities, Performing tests  Involves a lot of time and is, of course, a costly process. The Selenium automation The testing tool is convenient and it runs on browsers and dual platforms. This allows the selenium testing companies with the easy to write codes without  Having platform to run




Remote control:

The remote control feature of Selenium testing permits the testers to create And test the infrastructure that spread across different locations, including  The cloud so on drive the scripts on large set  of browsers


Many language support:

An application may be written in different languages and this is a challenge that is faced By automated testers. They have to gather the automation tools with the developing  Environment for CI, But with Selenium testing online training service bindings for  Groovy, Net, Python, Perl, Java, it is easy to integrate with the developing environment

Flexibility:

Software programmers usually prefer to keep the testing within the program. By using  Selenium software, the tests can regroup according to the needs. This allows quick  Changes to the codes and reduces duplication and also develop maintainability. This  A flexibility of Selenium helps the programmers to manage the tests.

Different Flavours in Selenium

Different Flavors of Selenium and Selenium online Training in Hyderabad: 


Selenium is free automated testing suite for web applications across various
Platforms and browsers, it is like HP Quick Test Pro, only that Selenium
Focuses on automating web based applications. Using Selenium tool testing done.


Kosmik Technology provides Selenium online training in Hyderabad, Students interested
In learning MSBI classes in online, we provide digital classrooms and certification 
Along with Expert faculty also provided.

We have different flavors in selenium, given below

1. Selenium IDE
2. Selenium RC
3. Selenium Grid
4. Selenium Web Driver or Selenium 2.0





1) SELENIUM IDE and learn selenium online:


1. Learn Selenium IDE has recording feature, which will keep account of user actions as they
   Are performed and store them as a script to play back.

2. Although Selenium IDE is Firefox add on, tests created in Selenium Ide can also run against
   another browser  by using Selenium RC and identify the name of the test suite on the
   Command line

3. Online Selenium IDE is the Integrated Development Environment for building Selenium test cases.

4. It also has context menu integrated with the Firefox browser, which allows the user
   To pick from list of verifications and assertions for the selected location

5. Selenium IDE also offers full editing of test cases for more precision and control.

6. Selenium is  Firefox add-on and provides an easy to use interface for  running  and  developing
   Individual test cases


SELENIUM RC online training: 


1. Selenium RC provides library and API for each of its supported languages
   Python, Ruby, Perl, PHP, HTML, and Java

2. Learning Selenium RC permits the test automation developer to use programming language
   For more extensibility and importance in developing test

3. If the application under test returns result set and if the automated test program
   Needs to run tests on each element in the result set


SELENIUM GRID online Training:

1. When tests sent to the hub they connected to available Selenium RC, which will launch
   The browser and run the test.

2. Dual instances of Selenium RC are running on different browser configurations, with it.

3. Selenium Grid permits the Selenium RC solution to scale for test suites that must be
   Run in dual environments.


SELENIUM WEB DRIVER or SELENIUM 2.0:

1. Selenium 2.0 has many new exciting features and improvements over Selenium 1.0

2. The primary feature is the integration of the Web Driver API. This address
   Number of advantages along with providing simpler and an alternative, Programming interface

3. The goal is to develop an object-oriented API, it provides more support For more number
   of browsers along with improved support for modern advanced  Web app testing problems