Monthly Archives: September 2017

Important Things About Hadoop and Apache Spark

In the big data space, they are seen as competitors but the main feeling is that they are better together with growing consensus. If you go through an reads about big data you will get to know about the presence of Apache Spark and Hadoop. Here are their brief overlook and comparison.

1) There are lots of things they do:

The two big data frameworks are Hadoop and Apache Spark but there is no same purpose that is actually served. Across various nodes, it shares massive data collections inside a cluster of commodity servers that you need not buy and handle commodity servers and it means you don’t need to buy or maintain expensive custom hardware. A data processing tool in spark, on the other hand, works on distributed data collections and it doesn’t do shared storage.

2) They both are independent:

There is not only just a storage component in Hadoop called Hadoop Distributed File System as you can also find MapReduce a processing component and there is no need of a spark to get it done. It is possible to use Spark without the need for Hadoop. There is no own file management system in Spark and it needs to be combined with one apart from that if HDFS is of no use then you can find another cloud-based data platform and the Spark was designed for Hadoop, however, there are lots of people who agree that they work better together.

3) Spark is faster:

MapReduce is generally slower than Spark because the latter’s way of processing the data. The operation of MapReduce is done in steps throughout the data in one fell swoop. This is how the MapReduce workflow looks like, “ the cluster reads the data work an operation and the clusters are written with results and the cluster reads the updated data and the next operation is performed, produce next result to the cluster etc. In memory and in near real-time the Spark completes the full data analytics and the data from the cluster is read for working all requisite analytic workings. Thus Spark is 10 times faster than MapReduce and 100 times faster than in-memory analytics.

4) Spark’s speed is not required for you:

If your data operations and reporting requirements are mostly static and you can stay for batch mode processing then your MapReduce processing would be just fine. On streaming data, if you need to do analytics like from sensors on a factory floor or possess applications needing multiple operations, then you need to go with Spark. For instance, there are lots of operations required and common applications for Spark are a real time marketing campaign, along with online product recommendations, analytics, machine log monitoring etc.

Thus join DBA Course to know more about Hadoop and Apache Spark.

Stay connected to CRB Tech for more technical optimization and other updates and information.

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Join the DBA training in Pune to make your career in DBA

In today’s E-world, DBA makes ways to store the data in an organized way and manage everything digitally.

Oracle DBA will definitely hold importance as long as databases are there. But we need to keep developing ourself and be updated with the newest technology. If you have the ability to note down the data properly and strategise your work or data in a better way, then you are the best to become a database administrator.

There are many new evolving technologies in DBA like Oracle RAC, Oracle Exadata, Golden Gate, ADM, Oracle Cloud etc. These are new places that promise growth on which you can make money. These technologies are relatively new and experienced professionals are less, which helps create many job opportunities.

Know your field of interest and start developing your skillset for a promising career in the field of DBA.

DBA training in Pune is always there for you to provide the placement as a DBA professional and we at CRB Tech have the best training facilities. We will provide you the 100% placement guaranteed.

Thus, DBA training would be the best option for you to make your career in this field .

What can be the better place than CRB Tech for DBA training in Pune?

DBA institute in Pune will help in you in understanding the basic concepts of DBA related ideas and thus improve your skills in PL/SQL queries.

CRB Tech is the best institution for DBA in Pune.

There are many institutes which offer training out of which CRB Tech stands apart and is always the best because of its 100% guaranteed placements and sophisticated training.

Reason for the best training in CRB Tech:

This has a variety of features that ensure that is the best option from among other DBA programs performed at other DBA training institutions in Pune. These are as follows:

1. You will definitely be a job holder:

We provide a very high intensive training and we also provide lots of interview calls and we make sure that you get placed before or at the end of the training or even after the training and not all the institutes provide such guarantees.

2. What is our placement record?

Our candidates are successfully placed in IBM, Max secure, Mind gate, saturn Infotech and if you refer the statistics of the number of students placed it is 100%

3. Ocean of job opportunities

We have lots of connections with various MNCs and we will provide you life time support to build your career.

4.LOI (Letter of intent):

LOI is offered by the hiring company at the starting itself and it stands for Letter Of Intent and after getting that, you will get the job at the end of the training or even before the training ends.

5. Foreign Language training:

German language training will help you while getting a job overseas in a country like Germany.

6.Interview calls:

We provide unlimited interview calls until the candidate gets placed and even after he/she gets placed he/she can still seek help from us for better job offers. So dont hesitate to join the DBA training in Pune.

7.Company environment

We provide corporate oriented infrastructure and it is in such a way that the candidates in the training will actually be working on the real time projects. Thus it will be useful for the candidate once he/she get placed. We also provide sophisticated lab facilities with all the latest DBA related software installed.

8.Prime Focus on market based training:

The main focus over here is dependent on the current industry related environment. So we provide such training in your training days. So that it will be easier for you to join the DBA jobs.

9.Emphasis on technical knowledge:

To be a successful DBA, you should be well aware of all the technical stuffs and the various concepts of SQL programming and our DBA training institutes have very good faculties who teach you all the technical concepts

Duration and payment assistance:

The duration of the training at our DBA institution in Pune is for

4 months.

The DBA sessions in Pune run for 7-8 hours on Monday to Friday.

Talking about the financial options:

Loan options:

Loan and installment choices are made available for expenses of charges.

Credit Card:

Students can opt the option of EMI transaction on their bank cards.

Cash payment:

Fees can also be paid in cash choices.

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An in-memory computing platform called as Apache Ignite can be inputed between a user’s application layer and data layer. From the current disk-based storage layer into RAM, enhancing six orders of magnitude and performance.

For handling peta bytes of data to which the in-memory data capacity can be easily scaled. Both the ACID transactions and SQL queries are further supported. Scale, performance, and comprehensive capabilities far above and beyond what traditional in memory databases, data grids are offered by Ignite.

For ripping and replacing their existing databases there is no need of users for Apache Ignite. It works with NoSQL, RDBMS, and Hadoop data stores. Fast analytics, real-time streaming, high performance enabling are some of the Apache Ignite highlights. A massively parallel architecture, used a shared, affordable commodity for current or new applications power. On premises, Apache Ignite can be run and on cloud platforms like Microsoft Azure, and AWS are in a hybrid environment.

Key Features

There is an in-memory data grid for handling distributed in-memory data management and it is contained in Apache Ignite. You will find object based, ACID transactional, failover, in-memory key value store, etc. On the contrary to traditional database management systems, primary storage mechanism are used by the Apache Ignite.

Instead of disk if you are using the memory then it increase its speed upto 1 million times faster than traditional databases.

Free-Form ANSI SQL-99, compliant requires with actually no limitations is supported by Apache Ingite. There are use of any SQL function, grouping, or aggregation, and it aids distributed, non co-located SQL joins and cross cache joins. The field queries concept of backing up to reduce the serialization and network overhead is also supported by Ignite. A computer grid for enabling parallel in memory processing is included in the Apache Ignite. There are other CPU-intensive or other resource-intensive tasks like traditional MPP, HPC, fork-join, and Map Reduce processing. For Standard Java Executor Service asynchronous processing is backed up by Apache.

Join the DBA course to make your career in this field.

Stay connected to CRB Tech for more technical optimization and other updates and information.

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Core Security Areas in MongoDB

There are new innovations in MongoDB security. There are lots of news and stories revealing how hackers use seizing MongoDB databases and ransoming data for bitcoins.

There is always a worry about security and if you run database, networks, applications, is always a prime issue. There are lots of companies to open source software and the reason is MongoDB for storing significant enterprise data, security becomes an important question. With respect to your business, you also have lots of government or business network security regulatory standards observe.

The safe thing to use over here is MongoDB and if you know your searching and the ways to configure it then it will be the best.

The main thing to refer here is how do people go wrong with MongoDb security?

You can find lots of areas with MongoDB users and security like:

Using the default ports

No immediate authentication enabling.

Providing broader access while using authentication.

For forcing password rotations, not using LDAP.

SSL usage is not forced on the databases.

Dont limit your database access to known network devices.

Five core security areas in MongoDB

Authentication: In your company directory, LDAP Authentication centralizes items.

Authorization: The database offers that the authorization defines role-based access controls using the database provisions.

Encryption: At-Rest and In-Transit, are the broken encryptions. For securing important data encryption is used.

Auditing: Who did what in the database is the ability of auditing.

Governance: Document validation is referred as governance and testing for sensitive data ( like account number, password, Social security number, or birth date).

LDAP Authentication

There are built in user roles for MongoDB and turns off automatically. There are items like password complexity, age based rotations etc and the identification and centralization of user roles versus service functions.

Hopefully LDAP can be used to fill lots gaps. There are lots of connectors to use the Windows Active Directory.

Note: It is available in LDAP support in MongoDB Enterprise. There is no community version. There are other open source versions of MongoDB like Percona Server for MongoDB.

Custom roles

MongoDB has a core called Role based access control (RBAC). In the version of 2.6 MongoDB there are some built in roles available. You can set new limitations as to what can or cannot be accessed Five core security areas in MongoDB by the users.

For more information join the DBA course in pune to make your career in this field.

Stay connected to CRB Tech for more technical optimization and other updates and information.

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