Big Data (Cloud Infrastructure) (Dublin, Ireland)

Interview Round - 1 (Technical)

• 1 DSA question - Graph (BFS)- 20-30 mins
  Full running code with corner test cases

Questions on -

• Linux commands (Depth)
• Operating Systems (kernels)
• AWS CLI
• Projects
• Spark
• Kafka

Interview Round 2 - (Technical)

• 1 DSA question - Arrays
  Full running code with corner test cases

Questions on -

• Networking - TCP/IP, UDP, 3 way handshaking
• Spark Achitecture in depth, Spark Optimization, Task vs Stage vs Action, Shuffling, Group Aggregations and joins internal working.
• Kafka
• Operating System
• JVM working

Interview Round 3 - (Managerial + Technical)

• Projects

• Data Pipeline

• Kafka - Very depth
  includes - components, architecture, event missing, event duplication, Producer working, Buffer in Producer, Consumer working, Fault Tolerance (replication Factor), Scaling, zookeeper working, Exceptions - MessageQueue exception.

• Managerial questions

• Hadoop, HDFS - Namenode, datanode, how cluster size is increased (multiple scenarios)

• Spark Optimization, Spark debugging

• DQ checks

Result - Selected !!