Hadoop Admin Interview Question 4

Q 1. In Hadoop ecosystem, we have HDFS, Zookeeper, Yarn/ Mapreduce2, Hive, spark, oozie. What is the sequence of start the service from first to last?Ans: Zookeeper, HDFS, Mapredure2/Yarn, hive, spark… Q 2. What are services you use for Authentication and...

Hadoop Admin Interview Question 3

1. Can you describe your Hadoop journey and current profile and roles and responsibility. 2. What is NameNode Heap memory and how we can configure NameNode heap memory.Ans: HADOOP_NAMENODE_OPTS=”-Xmx500m” will set it to 500MB. The “OPTS” here...

Hadoop Admin Interview Question 2

How do we decide the heap memory limit for a Hadoop? How do we decide the heap memory limit for Name Node? How do you increase the Name node heap memory? What is Standby Name Node and what is High availability Hadoop cluster? How do you resolve connectivity issue of...

Hadoop Admin Interview Question 1

Can you describe about your current roles and responsibility or day to day activity?  Please describe the YARN Architecture?  What is Name Node Heap memory and how we can configure heap memory ? What do you install Hadoop cluster, please describe in detail, what are...