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What is Flatten and what it do in PIG?
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Can we say a COGROUP is a group of more than 1 data set?
State the usage of 'filters', 'group' , 'orderBy', 'distinct' keywords in pig scripts?
What is UDF?
While writing evaluate UDF, which method has to be overridden?
Compare apache pig and sql?
What is the function of UNION and SPLIT operators? Give examples?
How will you merge the contents of two or more relations and divide a single relation into two or more relations?
Differentiate between GROUP and COGROUP operators?
You have a file employee.txt in the hdfs directory with 100 records. You want to see only the first 10 records from the employee.txt file. How will you do this?
What are the complex datatypes in pig?
How to write 'foreach' statement for map datatype in pig scripts?
What are the execution modes in the apache pig?
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