Answer:A UDF has input and output. Here is the different ways you can specify the output format of a Python UDF through use of the outputSchema decorator.
pig practice questions
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Answer:Apache Pig is a tool for analytics which is used to
analyze data stored in HDFS. Apache Sqoop is a tool to importing structured data from RDBMS to HDFS or exporting data from HDFS to RDBMS.
Answer:Apache Pig is a high-level,Apache Hive is a data warehouse
software project,Open-source software framework
Answer:For readability GROUP is used Cogroup used as a statements
Answer:Pig Latin is not a language but its a language game that all use to speak in code
Answer:User can perform all the data manipulation operations in Hadoop using Apache Pig
Answer:The FOREACH operator is used to generate specified data transformations based on the column data.
Answer:Joining skewed data using apache Pig skewed join.In a distributed processing environment Data skew is a serious problem,and occurs when the data is not evenly divided among the key tuples from the map phase.
Answer:In 2006 Pig was developed by Yahoo Research for particular way of creating and executing MapReduce jobs on very large data sets.
Answer:Apache Pig is used to creating programs that runs on Apache Hadoop
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