What is the purpose of @outputSchema decorator in Python UDF when using in Apache Pig ?
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.
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Apache Pig
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What is the main difference between pig vs hive vs sql ?
Answer:Pig does not have a dedicated metadata database. Hive makes use of the exact variation of dedicated SQL-DDL language by defining tables beforehand. 14. It supports Avro file format.
What is the difference between Pig, Hive and HBase ?
Answer:It is used for semi structured data. ,Hive is query engine,HBase is a data storage particularly for unstructured data.
What is the difference between Pig and Sqoop in Hadoop ?
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.
What is the difference between Pig, Hive and MapReduce ?
Answer:Pig is a scripting language,SQL like query language,It is a compiled language
What is the difference between Pig and Hive ?
Answer:Pig Hadoop Component is generally
used by Researchers and Programmers. Hive Hadoop Component is mainly used by data analysts.
What is the difference between Pig,Hive and Hadoop ?
Answer:Apache Pig is a high-level,Apache Hive is a data warehouse
software project,Open-source software framework
What is the difference between group and cogroup in Pig Latin ?
Answer:For readability GROUP is used Cogroup used as a statements
What is the best tool to process web streaming data in Hadoop,PIG or HIVE ?
Answer:It contains easy programming
What is Hbase used for, and what are the benefits that it provides over Pig and Hive ?
Answer:HBASE will not replace Map Reduce. It is scalable distributed database….
What is default numbers of reducers while executing a pig query ?
Answer:Where XXX is the number of reducer.
What is pig Latin ?
Answer:Pig Latin is not a language but its a language game that all use to speak in code
What is Pig in Hadoop ?
Answer:User can perform all the data manipulation operations in Hadoop using Apache Pig
What is workflow when using Pig & R ?
Answer:Pig programming language is used for obtaining and manipulating data perhaps doing otherwise with UDFs…..
What is the usage of FOREACH operation in Pig scripts ?
Answer:The FOREACH operator is used to generate specified data transformations based on the column data.
What is UDF in Pig ?
Answer:Pig UDFs-Pig supported the languages: Java, Python, and JavaScript.
What is a skewed join in Pig ?
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.
What is the internal architecture of Apache Pig ?
Answer:Pig Latin consist of pig to analyze the data from Hadoop
What is the history of Pig in Hadoop ?
Answer:In 2006 Pig was developed by Yahoo Research for particular way of creating and executing MapReduce jobs on very large data sets.
