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 is apache camel used for?

Explain how to use pmd validation in ant script?

125

How we can set path path and classpath into an ant build file?

How to create fileupload field in apache-wicket?

What is the default error handler in camel?

What are the most common elements in solrconfig.xml?

162

Which command is used to start solr in foreground?

110

Can you define highlighting?

102

Explain the difference between apache kafka and apache storm?

how can you get multiple processes to log to the same file?

Can you define zeromq?

What is pallet component in apache-wicket?

What is the backpressure in nifi system?

Why do you call it ant?

what is package level logging in log4j?

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