Cloudera® Cca175: Hadoop and Spark Developer Faq & Study Guide

1. Apache Spark Professional Training with Hands On Lab Sessions 2. Oreilly Databricks Apache Spark Developer Certification Simulator 3. Hadoop Professional Training 4. Apache OOZie HandsOn Professional Training 5. NiFi Professional Training with Hands-on session

CLOUDERA® CCA175: HADOOP AND SPARK DEVELOPER FAQ & STUDY GUIDE

By http://www.HadoopExam.com

Cloudera CCA175 (Hadoop and Spark Developer Hands-on Certification available with total 90 solved problem scenarios. Click for More Detail) Cloudera CCPDE575 (Hadoop BigData Data Engineer Professional Hands-on Certification available with total 79 solved problem scenarios. Click for More Detail) Cloudera CCA159 Data Analyst Certification Practice Questions (Total 73 HandsOn Practice Questions)

Question 1: How frequently CCA175 questions or syllabus updates?

Answer: Generally, we don’t see any fixed timeline for syllabus updates, CCA175 exam syllabus are certainly revised time to time. We have seen many times (almost every year) in last few years not only syllabus but questions pattern have changed. Cloudera is pioneer for the Hadoop/BigData framework and we have been following it since 2012 to make our CCA175 Certification product in-line with their syllabus. Regarding updates, you need to continuously check for the syllabus on Cloudera certification page. However, 1000’s of learners use our certification preparation material, so we get update frequently and it is easy to update http://www.HadoopExam.com CCA175 certification simulator. Once the Cloudera update the syllabus, you should always prepare according to that new syllabus. Frequency of syllabus update is once in a year, we have seen till now.

Question 2: If I found any issue, with scheduling of CCA175 exam, whom should I contact?

Answer: You can use the email id provided at their certification page [email protected] .

We have seen many learner face problem for scheduling the exam and they need to contact Cloudera for the same. Currently exam is conducted on AWS platform and some unique AWS ID is assigned/used for each certification aspirants. Once an ID is used on AWS, then Cloudera will not be able to register that particular email again. If you face problem than use above email id, this is one of the best way to resolve this issue.

Question 3: I am using Scala for my CCA175 certification, but as I know for submitting application in Scala/Java, I need to first create a Jar out of my code. It will take lot of time and I am not sure that tools will be available to create Jar file, during exam?

Answer: Hmm, this is very valid question. Learners who use Scala for CCA175 exam, they always face this concern. However, Cloudera is not going to test, that you have knowledge of building jar or not. Hence, you should not worry about building the jar file for your Scala code, instead use spark-shell to submit your Scala code line by line and produce the desired result. Not creating Jar file, will save your lot of time. You need to consider these questions for preparing for CCA175 certification, because more than 50 Spark practice questions are given, in total you will find 111 questions for CCA175 exam these are always updated based on new syllabus. You can run all the example line by line as well, and same practice you need to follow in real exam. If you are using Python instead of Scala, then you don’t have to build a Jar kind of package to submit your application. Go through this 111 updated questions, you will become very well comfortable with the real exam. Make sure, you practice all questions with valid version of Spark framework, otherwise your practice go wasted, you may have learn to run code with the latest API, but that might not work with Cloudera real exam environment. Based on or learners feedback, we have recently updated these questions and added 16 new questions. Our learners average scoring is 9/10 and even many learners scored 10/10. By completing this 111 questions, you will not only able to clear your exam, but you can use same practices in your daily regular routing work for Big Data Engineering using Spark, Scala, Python, Sqoop, Flume, HDFS, Shell Script, Spark SQL and much more. These CCA175 questions are regularly updated based on our learner’s feedback, hence once you appear in exam, please provide feedback about your experience in real exam on [email protected] , and anything new you find regarding the exam, if we are missing this will help all the future aspirants.

You will have to save the code, somewhere which you have used in spark-shell, so that Cloudera can verify your approach. They will provide you the detail, where to submit/save the code.

Question 4: Which version of Spark is used in CCA175 certification?

Answer: Let me first tell you that Cloudera is not only testing your Spark programming skill, they are testing that you are able to work with currently available CDH (Cloudera Distribution of Hadoop) version. Which is bundled with many eco-system of BigData Hadoop, Spark is one of them, and they wanted to test many of the available components for the developer. Even you see most of the organization use Spark well integrated with the Hadoop distribution either HDP, CDH or MapR Hadoop. Hence, whatever Spark version is available in that particular CDH version, will be tested. Hence, currently you should be able to write code using Spark 1.6 programming API. That is why it is very important that you practice questions based on specific version of Spark and the best approach to follow these 111 questions of CCA175, which has detailed problem statement as well as its step by step solution, which has been executed on that specific Spark platform. Not only you should get acquainted with the Spark 1.6 programming model, but also you should become comfortable working with the CDH platform, how to use path for file stored in HDFS , how to use JDBC connection, specially connection MySQL database using Spark 1.6 only (Don’t use older or newer version, be specific here). Question 5: I am quite comfortable using Sqoop and I practiced all the 111 questions of CCA175, given here. But I cannot remember all the options used in Sqoop import and export command, what to do in this case?

Answer: Generally programmer don’t remember all the APIs and options of the commands, but they are aware this particular feature is available and to know the exact syntax they need to use documentation. Cloudera provides the documentation for Sqoop in CCA175 real exam. As you are quite comfortable after practicing these 111 questions, you may not need to go to documentation, to save time. Rather go to terminal and type sqoop help import or sqoop help export etc. This would be quite faster approach and save lot of time. This is very important you are well managed during the exam and no all the possible ways of saving your time. But don’t get panic, and calmly follow the documentation if you forgot to use particular command syntax. Cloudera will provide all the documentation for the products used in their CDH platform.

Question 6: Cloudera introduce another exam for Data Analyst CCA159, does it make any difference with the existing CCA175 exam?

Answer: Cloudera Hadoop Distribution are used by many different profile of professional, like if you are a data analyst then you should not be writing complex programming in Spark, but rather prefer SQL based solution. If you are a developer than you will be using programming to work with data. Even for the people/learners who are more comfortable with the advance feature of Cloudera Hadoop Distribution most of the Big Data architect and experienced developer use CCP:DE575 exam (this is Cloudera Certified Professional exam). So the main impact of introducing Data Analyst exam is that many type of questions, will be moved out of CCA175 exam like DDL (Data Definition Question) defining tables etc. . However, we suggest being a developer you should be able to do this. More complex DML syntax are not expected from you in CCA175 exam, like write very complex Hive and Impala queries, this is expected in CCA159 exam instead. You should be able to use Hive meta-store from Spark, Sqoop etc. and able to write some queries using Spark SQL (But very complex queries, specially analytical functions

based queries are not expected). You should be able to filter, format, join the data in CCA175 exam. So the best way to be specific preparation use this 111 questions for practicing your real exam. Average scoring by learners is 9/10 after practicing this CCA175, total 111 questions, which come along with the required data as well as solution and also complimentary videos are available in which solution and problem are explained in detail. Whenever syllabus changed, feedback from previous learners are very helpful and we at http://www.HadoopExam.com integrate that feedback as soon as possible after receiving it from the learners. We have launched this CCA175 certification material with just 50 practice questions and now we have in total 111 questions, which are updated and corrected based on feedback of successful candidates.

Question 7: What exactly is the CCA175, 111 question pattern and HadoopExam.com problem scenario follow the same pattern?

Answer: Each CCA question requires you to solve a particular scenario. In some cases, a tool such as Impala or Hive may be used. In other cases, coding is required. In order to speed up development time of Spark questions, a template is often provided that contains a skeleton of the solution, asking the candidate to fill in the missing lines with functional code. This template is written in either Scala or Python.

You are not required to use the template and may solve the scenario using a language you prefer. Be aware, however, that coding every problem from scratch may take more time than is allocated for the exam.

This is what written on Cloudera certification page. And HadoopExam.com provides its problem scenario in-line of this. The major difference between CDH real exam questions and CCA175, HadoopExam questions is the data volume, we may not be able to provide quite a huge volume of data to practice, however our newly added questions has little more data volume to practice given question, you will be provided separate link to download that data and steps will be provided how to use that. So once you complete all the questions during your preparation, you will find questions are quite similar You also have to use multiple steps during your real exam, which is separated as a multiple problem scenario in HadoopExam.com CCA175 certification simulator.

Question 8: Does Cloudera ask, which particular tool to be used for solving given problem scenario?

Answer: No, Cloudera does not ask to use specific tool for their CDH eco-system, it is your choice in whatever tool you are comfortable, and you should that tool. For example both Hive and Impala are available to work with the data stored in HDFS and it is your choice to use either Impala or Hive. However, Cloudera more interested in that your final and intermediate result should match exactly as per expectations asked in problem scenario.

Question 9: Why Cloudera mentioned Python and Scala both in their syllabus?

Answer: This is one of the mostly asked question about CCA175 exam, and please see below response

 You do not need to know both PySpark and Scala, expertise in any one of them is fine.  You don’t have to write same program in both Scala and PySpark. You need to write answer in any one of the programming language of your choice.

 Cloudera will not provide template for same question in both Scala and PySpark, they will provide in any one of these programming language.  If template is provided in PySpark and you want to answer question using Scala, then you have to write entire program from scratch to get the same solution and desired output.  Please note that the in CCA175 exam Cloudera want to test your Spark knowledge, not your Scala and Python programming skill. The programming questions will provide you some code and ask you to fill in some empty sections. Hence, you need to well verse with the Spark API. And must have some knowledge of development, as you will need to be able to read the existing code and understand how to store and retrieve the results you get back from calling the API, but the focus will be on you adding the Spark calls. And these 111 questions are good enough to get acquainted with the real CCA175 exam.  You will not be provided internet access during the exam, but documentation will be provided. Question 10: Does HCatalog will be available for CCA175 exam?

Answer: Yes, HCatalog is part of CDH5 and currently CCA175 exam is conducted on CDH5 cluster only. Use this questions (Includes problem and solutions) for preparing CCA175 exam.

So now the question is how to prepare for such a scenario so you would be very comfortable for giving your real exam. For that you can use regularly updated certification preparation material and trainings.

 Hadoop Professional Training  Spark professional Training in Scala  111 solve problems scenario for CCA175 Certification, It will come with selected complimentary videos to help you to do setup and how to solve all the given questions.  Till now more than 10,000 learners have used this material to prove in their carrier

Question 11: Problem with the real CCA175 exam?

Answer: One of our learner complained that during real exam through IE (He was attempting from his home) faced an issue with the exam connection. He saw the screen Please wait… exa is loadig and exam did not load for next one hour. He took the screenshot of this and send it to [email protected] . However, he was not able to attempt the exam immediately, Cloudera team helped him to re-schedule the exam. So if you come across similar situation, then please follow similar steps. This is 2018 incident.

Question 12: During the CCA175 real exam, CDH cluster will be in running state or stopped state?

Answer: CDH cluster will be provided with the running state. However, if you get any operational/technical issue, you may take help of the available proctor (However, depend how good this proctor in solving your technical issues  .

Question 13: What all Python and Scala programming related tools will be available in CCA175 exam?

Answer: In addition the cluster also comes with Python (2.6 and 3.4), Perl 5.10, Elephant Bird, Cascading 2.6, Brickhouse, Hive Swarm, Scala 2.11, Scalding, IDEA, Sublime, Eclipse, and NetBeans.

Question 14: How big of the cluster and data size in real CCA175 exam?

Answer: You will be given 4 node cluster and data size could be upto millions of records. If you follow correct/efficient step then processing millions of record should not take more than a minute or two.

Question 15: During the real CCA175 exam, what other things cannot be done?

Answer: Remember below important points with regards to CCA175 exam

 You will not be provided internet connectivity.  You cannot use pen and paper, but you can use tool provided during the exam on the same exam environment like any text editor etc.  You cannot drink or eat during the exam.

Question 16: I am taking CCA175 exam from my home and I use routine internet connection available my home. Somehow network is not available in the middle of exam then what?

Answer: Yes, it is your responsibility maintain the internet connection with the exam environment. If in the middle of exam, if connection is lost, you can re-connect to your exam (However, the time lost between connections lost, will be counted). So you need to make sure you have good internet connectivity. If you are not able to re-connect your exam, it will considered as exam attempted and if you are not able to score enough then it will be considered as fail. And no-refund will be provided for this disconnected exam.

Question 17: Does each question is depend on any other question, in real CCA175 exam?

Answer: As of now, whatever feedback we have received from our learner, we found that each question is independent and have unique objective. Hence, if you answer question correctly you will get full marks, there is no concept of partial marking in each question.

Question 18: Do I need to do any configuration before attempting any solution like copying hive- site.xml file on Spark conf directory, so I can use Hive in Spark SQL?

Answer: This type of configuration is not expected in CCA175 exam. All the required configuration will be already in place to resolve the given problem. Hence, we are suggesting you practice these 111 questions before your real exam, after using that material learners are able to score 9/10 on average, and some of the genius learners have scored 10/10 as well.

Question 19: I am preparing for CCA175 certification exam and I found below error ͞WARN metastore.ObjectStore: Failed to get database default, returning NoSuchObjectException͟ Answer: We suggest you use this material to prepare for real CCA175 exam, which is in line with the real exam and help you to avoid such trivial issues.

Question 20: How do I prepare for CCA175 Hadoop and Spark Developer certification?

Answer: As being one of the most popular and demanding certification CCA175, it test both Hadoop and Spark. You need to have properly guided material as per latest CCA175 syllabus. We re-commend that you use below three products, which will prepare you for the real exam in limited time and having focus on the specific required topic and do not waste your time to finding more material on internet. These three most popular products are.

 Spark Professioanl Training. with HadnsOn Session  Hadoop Professioanl Training with HandsOn Session  CCA175 Spark and Hadoop Developer Certifications

Let’s be stay focused to save your valuable time. Http://www.HadoopExam.com Training for Spark and Hadoop teaches you everything you need to know for the exam and many of hands-on practice. We both train and test the same objectives (although we train on more of course)

Question 21: What do you think, how the scoring is done in CCA175 real exam?

Answer: As you knwo, CCA-175 exam is a hands-on, scenario-driven test. You will be asked to solve problems. The grading will be based on the solutions that you provide. Cloudera do not evaluate the tools or the code that you used to solve the problems.

Can you use Hive, SparkSQL, Pig or Spark API ? Yes. It may be possible to solve every one of the problems on the exam using just single tool like Spark if you are an expert on that particular tool. However, practically it is not possible and correct, if that is the case then why so many tools around Hadoop exists. There may be better tools for interacting with the Hive metastore to do DDL, such as Impala, Hive, HUE, HCatalog, etc. Similarly, the coding questions will give you PySpark templates to add code to. You may not have enough time in the exam to code everything from scratch in Spark. Regarding Pig, it is not listed in the Required Skills, because there will not be a specific question where you are required to use Pig on the exam. The Required Skills section contains this line:

Use Data Definition Language (DDL) to create tables in the Hive metastore for use by Hive and Impala. There is no contradiction. This is a "problem solving exam" as opposed to a "tools exam". You should be able to use any of available tools to generate solutions, as we mentioned previously as well of your choice and scoring is not done, which tool you have used.

Question 22: I have not received my badge after clearing CCA175 real exam to be uploaded in LinkedIn?

Answer: You need to drop an email to Cloudera for that on [email protected] . Once you receive this badge, you can use it on your LinkedIn profile page.

Question 23: Is it required to attend Cloudera provided training for this CCA175 certification exam?

Answer: No, Cloudera does not mandate you to attend training provided by them to clear CCA175 certification exam. You can use below material to prepare for CCA175 certification, it is affordable and most of the learners score 9/10 on average after using this material.

 Spark Professioanl Training. with HadnsOn Session  Hadoop Professioanl Training with HandsOn Session  CCA175 Spark and Hadoop Developer Certifications Question 24: In my scoresheet I saw question attempt is missed and even I got credit for that question?

Answer: Sometime it is possible that, you have attempted the question but not able to complete that question and your approach is also correct. You may be given partial credit for that question, this generally happens with the question having higher difficulty level. Passing score for CCA175 is between 70% and 80%. Sometime you can also see that you have attempted question completely and given partial score. Yes, that is possible, because your approach may not be 100% accurate or efficient.

Required Skills for CCA175

Data Ingest: The skills to transfer data between external systems and your cluster. This includes the following:

1. Import data from a MySQL database into HDFS using Sqoop 2. Export data to a MySQL database from HDFS using Sqoop 3. Change the delimiter and file format of data during import using Sqoop 4. Ingest real-time and near-real-time streaming data into HDFS 5. Process streaming data as it is loaded onto the cluster 6. Load data into and out of HDFS using the Hadoop File System commands

Transform, Stage, and Store: Convert a set of data values in a given format stored in HDFS into new data values or a new data format and write them into HDFS.

1. Load RDD data from HDFS for use in Spark applications 2. Write the results from an RDD back into HDFS using Spark 3. Read and write files in a variety of file formats 4. Perform standard extract, transform, load (ETL) processes on data

Data Analysis: Use Spark SQL to interact with the metastore pro-grammatically in your applications. Generate reports by using queries against loaded data.

1. Use metastore tables as an input source or an output sink for Spark applications 2. Understand the fundamentals of querying datasets in Spark 3. Filter data using Spark 4. Write queries that calculate aggregate statistics 5. Join disparate datasets using Spark 6. Produce ranked or sorted data

Configuration: This is a practical exam and the candidate should be familiar with all aspects of generating a result, not just writing code.

1. Supply command-line options to change your application configuration, such as increasing available memory

All Products List of www.HadoopExam.com

TRAINING'S (AVAILABLE)

 Hadoop BigData Professional Training  HBase (NoSQL) Professional Training  Apache Spark Professional Training  Apache OOZie (Hadoop workflow) Professional Training  Beginner AWS Training Course- (HETRNAWS101)  Core Java 1z0-808 Exam training  JAX-WS (Java WebService HandsOn Training)  Scala Programming Training  Python Programming Training  Hortonworks Administration Professional Trainings  SAS BASE PROGRAMMING TRAINING : HANDSON LAB  NiFi : Hortonworks DataFlow Training : HandsOn Lab

MAPR HADOOP AND NOSQL CERTIFICATION (AVAILABLE)

 MapR Hadoop Developer Certification  MapR HBase NoSQL Certification  MapR Spark Developer Certification (In Progress)

HORTONWORKS HADOOP AND NOSQL CERTIFICATION (AVAILABLE)

 HDPCD : NO Java (Hortonworks Developer Certification)

 HDPCD : Spark (Spark Developer Certifications)  HDPCA : Hortonworks Administration Certification  Hortonworks Administration Professional Trainings

CLOUDERA HADOOP AND SPARK CERTIFICATION (AVAILABLE)

 CCA131 : Hadoop Administrator  CCA-175 Cloudera® (Hadoop and Spark Developer)  CCP:DE575 : Cloudera® Data Engineer Certification  CCA159 : Cloudera Data Analyst Certifications

DATABRICKSA OREILLY SPARK CERTIFICATION (AVAILABLE)

 Apache Spark Developer

AWS: AMAZON WEBSERVICE CERTIFICATION (AVAILABLE)

 AWS Solution Architect : Associate  AWS Solution Architect: Professional  AWS Developer : Associate  AWS Sysops Admin : Associate

MICROSOFT AZURE CERTIFICATION (AVAILABLE)

 Azure 70-532  Azure 70-533

DATA SCIENCE CERTIFICATION (AVAILABLE)

 EMC E20-007

EMC CERTIFICATIONS (AVAILABLE)

 EMC E20-007

SAS ANALYTICS CERTIFICATION (AVAILABLE)

 SAS Base A00-211  SAS Advanced A00-212  SAS Analytics : A00-240  SAS Administrator : A00-250

ORACLE JAVA CERTIFICATION (AVAILABLE)

 Java 1z0-808  Java 1z0-809  Java 1z0-897 (Java WebService Certification)

ORACLE DATABASE CLOUD CERTIFICATION (AVAILABLE)

 1z0-060 (Oracle 12c)  1z0-061 (Oracle 12c)

Subscribe Here for Regular Updates: Like New Training Module launched

Become Author and Trainer: We are looking for Author (Writing Technical Books) and Trainer (Creating Training Material): No Compromise on Quality.

Benefit: You will get very good revenue sharing. Please drop us an email to [email protected] (For the skills, you feel you are master)

We are sure, you are good at least one technology. Don’t limit your potential, contact us immediately with your skill. Our expert team will contact you with more detail. You training and Books will reach to all our existing network and with our expert marketing team we will help you to reach as much as technical professional, with our Smart Advertising network. Contact us with sending an email [email protected]

Opportunity to share your knowledge with all learners who are in need. We are helping 1000's of learners since last 4 years and established ourselves with Quality low cost material.