Java Interview questions
Which one is efficient in terms of retrieval between TreeMap and HashMap What is an atomic operation and synchronized in Java? We have ReST Service and multiple clients accessing it. How do you handle the count of calls to ReST Service from these clients including concurrent calls We have Hive Tables - Emp Table and Dept Table and a join query to get employee name and department name on join condition empId == deptId. Can you explain internal execution of this hive query? Explain the mechanism of Mapper Output related to Reducers Input. What is the default partitioner used in Spark? How to handle data skew and cleansing operations? Do you know about Spark Execution Memory Model? Since you have 15+ yrs of exp, what type of role are you looking at (Non-Technical) Explain purpose of Spring Profiles How do you find the middle node in a singly linked list without using any built-in functionality? When we try to place