Can you explain faceting in solr?
what is topology_message_timeout_secs in apache storm?
Explain how to use pmd validation in ant script?
what are the system properties checked by log4j?
Why do we need @script in apache tapestry?
How will you set the printable area of an excel using apache poi?
Is spark sql similar to drill?
Can you define apache lucene?
What is about web application in wicket?
What is data integrity and what are the methods available to reduce threats to it?
What happens, if you have stored a password in a dataflow and create a template out of it?
What file contains configuration for data directory?
Can you explain distributed messaging system?
Can you explain the difference between raw data and processed data?
Explain how to use ant-contrib tasks?