Mobile:
+91-8879712614 Phone:022-42669636 | Email : hadoopexam@gmail.com
admin@hadoopexam.com
All Products Spark IBM MapR Hortonworks Cloudera NiFi
Amazon AWS SAS
HBase Cassandra
Salesforce Oracle Cloud & Java Android To Activate
Free
Resources
Forum
Subscribe
Annual
Subscription (50%+49% off) Author/Trainer
For Business
Blog 
25000+ Learners upgraded/switched career Testimonials
All
Certifications
preparation material is for renowned vendors like
Cloudera, MapR, EMC, Databricks,SAS, Datastax, Oracle,
NetApp etc , which has more value, reliability and
consideration in industry other than any training
institutional certifications.
Note
:
You can choose more than one product to have custome
package created from below and send email to
hadoopexam@gmail.com to get discount.Premium
Trainings Courses : HadoopExam focuses
on in depth learning with the hands-on session setting up the
environment than executing solution and doing hands on
that. Below are the available trainings and we are keep adding
new trainings. These trainings is being used and subscribed by
Devloper, Tester, Administrator, Enterprise(to train their team)
and Trainer globally. These trainings are well organized and
step by step solutions to learning, and in lesser time as per
your convenience you can complete these and even re-visit as
required.
Previous | Next | Audio Book for Spark Interview Questions is available here | Top 150 Latest Spark Interview Questions | Quickly go through Spark Training Python & Scala
Question: What is the Driver Program in Spark?
Answer: This is one of the main program in Spark application, in case of REPL (spark shell will be driver program). Driver program create the instance of SparkSession or SparkContext. It is the responsibility of the Driver program to communicate with the Cluster manager to distribute the task to cluster worker nodes.
Question: Which all are daemon process are part of the standalone cluster manager?
Answer: As we have mentioned, standalone cluster manager is not good for the production use cases. You should consider this only for testing and POC purpose. So, when you start Spark with the standalone cluster manager then it creates the two daemon processes.
- Master Node
- Worker Node
Question: How do you define the Worker Node in Spark cluster?
Answer: You can say that, they are slave nodes, and actual your processing on data happens on worker node. Worker node always communicate with the Master Node and inform about the availability of the resources. Generally on each node, in your cluster one worker node is started, which is responsible for running your application on that particular node and also monitor that application.
Question: What is the executors in Spark?
Answer: Each Spark application, you submit has its own executors process, executors exists only until your application runs. Driver program uses these executors to run the tasks on the worker nodes and also help in keeping data in memory and when required can be spilled on disk.
Question: What is the Task in Spark?
Answer: Task is the unit of work, which is sent to the executor running on the worker node. It is a command which will be sent to the executor by a driver program by serializing your Function object. It is the responsibility of the executor process to de-serialize this Function object and execute on the data which is partitioned (one of the RDD partition) and exists on that node.
Previous | Next | Audio Book for Spark Interview Questions is available here | Top 150 Latest Spark Interview Questions | Quickly go through Spark Training Python & Scala
- Training Access: No time constraint and Any future enhancements on same and subscribed training will be free.
- Question Bank
(Online Simulator): Now you can have free
updates for additional or updated Questions till
your subscription is active.
- On
Mobile/Tablet/Desktop : You know this
particular exam you can access from your mobile,
tablet or Desktop. You just need internet access and
browser.
- Training Institute : Do you know many of the training institutes subscribe this products from HadoopExam to train their students.
Do
you know?
Read all testimonials its learners voice : Testimonials
Read all testimonials its learners voice : Testimonials