Apache Related Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Related Interview Questions

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Explain why to use Apache Log4j?

what is the best way to migrate from java.util logging to log4j?

what does WARN and TRACE level indicates in log4j?

what are the two static methods for obtaining a logger object?

why do you get multiple copies of the message in log file sometime?

what is package level logging in log4j?

what are the format characters used in log4j?

what is layouts in log4j?

what are the logging methods provided by logger class?

Inside logger component what are the different log levels?

What is Camel?

Is camel an esb?

Does camel link method invocation of bean at compile time or runtime?

What is the content of Exchange in camel?

What jars do I need?

Un-Answered Questions { Apache Related }

What are the important configuration files of solr?

271

What is MEP in camel?

What is a build tool?

117

Is spark sql similar to drill?

What are the dependencies?

What is apache camel?

What is field analyzer?

167

List the various categories of highlighters.

110

What is history of ant?

What are the core concepts of ant?

What is apache drill?

Is there a programming language that apache nifi supports?

Tell me the example of username validation in apache-wicket?

What is default registry in camel?

Explain how to test classes for junit using ant script?

110

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