Download the free demo before buying

Our customers are all over the world, and our Apache-Hadoop-Developer exam materials are very popular in many countries since they come out. If you still have any misgivings, just take it easy, we can fully understand you, but please click into our website and download the free demo of Apache-Hadoop-Developer study guide before you make a decision. We provide three kinds of demo versions for our customers, and welcome everyone to have a try. We believe that you will be attracted by the helpful contents in our Apache-Hadoop-Developer practice questions, and we are look forward to your success in the near future.

We have been engaged in all kinds of exams since we are little children, and we have learned from so many exam experiences that how important it is to know the key points and the question types before the exam. Now, there is good news for the IT workers who are preparing for the Apache-Hadoop-Developer test. I am glad to tell you that our company has employed a lot of top IT experts who are from different countries to compile the Apache-Hadoop-Developer exam materials for IT exam during the 10 years, and we have made great achievements in this field. Now, our Apache-Hadoop-Developer practice questions have received warm reception from many countries and have become the leader in this field, the reasons are as follows.

High safety for the information of our customers

There is no need for you to worry about the safety of your personal information, because one of the biggest advantages of buying Apache-Hadoop-Developer exam materials from our website is that we will spare no effort to guarantee the privacy of our customers. We have always attached great importance to the protection of the information of our customers, and our operation system will record the e-mail address you registered, and will send the Apache-Hadoop-Developer exam study guide to your e-mail automatically after payment, and in the process, your information is completely confidential. In addition, our company has carried out cooperation with the trustworthy payment platform. We sincerely will protect your interests in our Apache-Hadoop-Developer practice questions from any danger. You can share free shopping.

After purchase, Instant Download: Upon successful payment, Our systems will automatically send the product you have purchased to your mailbox by email. (If not received within 12 hours, please contact us. Note: don't forget to check your spam.)

High pass rate

Our Apache-Hadoop-Developer study guide almost covers all of the key points and the newest question types in the IT exam, what's more, there are explanations for some answers of the difficult questions in the Apache-Hadoop-Developer exam materials that can let the buyers have a better understanding of these difficult questions, with which there is no doubt that you can pass the exam much easier. The feedbacks from our customers have shown that with the help of our Apache-Hadoop-Developer practice questions, the pass rate has reached as high as 98%~100%, which is the highest pass rate in the IT field. So if you really want to pass the IT exam and get the IT certification, do not wait any more, our Apache-Hadoop-Developer exam study guide materials are the most suitable and the most useful study materials for you.

Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:

Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:

1. Which process describes the lifecycle of a Mapper?

A) The JobTracker spawns a new Mapper to process all records in a single file.
B) The TaskTracker spawns a new Mapper to process all records in a single input split.
C) The TaskTracker spawns a new Mapper to process each key-value pair.
D) The JobTracker calls the TaskTracker's configure () method, then its map () method and finally its close () method.

2. Which one of the following statements is true regarding a MapReduce job?

A) The Mapper must sort its output of (key.value) pairs in descending order based on value
B) The default Hash Partitioner sends key value pairs with the same key to the same Reducer
C) The job's Partitioner shuffles and sorts all (key.value) pairs and sends the output to all reducers
D) The reduce method is invoked once for each unique value

3. You write MapReduce job to process 100 files in HDFS. Your MapReduce algorithm uses TextInputFormat: the mapper applies a regular expression over input values and emits key-values pairs with the key consisting of the matching text, and the value containing the filename and byte offset. Determine the difference between setting the number of reduces to one and settings the number of reducers to zero.

A) With zero reducers, all instances of matching patterns are gathered together in one file on HDFS. With one reducer, instances of matching patterns are stored in multiple files on HDFS.
B) With zero reducers, no reducer runs and the job throws an exception. With one reducer, instances of matching patterns are stored in a single file on HDFS.
C) There is no difference in output between the two settings.
D) With zero reducers, instances of matching patterns are stored in multiple files on HDFS. With one reducer, all instances of matching patterns are gathered together in one file on HDFS.

4. Indentify which method in the Mapper you should use to implement code for reading the file and populating the associative array?

A) map
B) init
C) configure
D) combine

5. You need to move a file titled "weblogs" into HDFS. When you try to copy the file, you can't. You know you have ample space on your DataNodes. Which action should you take to relieve this situation and store more files in HDFS?

A) Decrease the block size on all current files in HDFS.
B) Increase the amount of memory for the NameNode.
C) Increase the number of disks (or size) for the NameNode.
D) Increase the block size on all current files in HDFS.
E) Decrease the block size on your remaining files.
F) Increase the block size on your remaining files.

Solutions: