Answer / Aneek Yadav

Apache Pig supports two modes to run scripts: Local Mode and MapReduce Mode. In Local Mode, Pig runs on a single machine using its built-in execution engine. In MapReduce Mode, it uses Apache Hadoop's MapReduce for distributed processing.

Why should we use ‘orderby’ keyword in pig scripts?

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How can you debug a pig script?

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What are the differences between PIG and MapReduce?

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What are the relational operators available related to Grouping and joining in Pig language?

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What is the difference between Pig and MapReduce?

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What are the differences between PIG and HIVE?

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How do users interact with HDFS in Apache Pig ?

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State the limitations of Apache Pig?

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Explain plucktuple?

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You have a file personal_data.txt in the HDFS directory with 100 records. You want to see only the first 5 records from the employee.txt file. How will you do this?

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Write a Pig UDF Example ?

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When to use hadoop, hbase, hive and pig?

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