Apache Pig – Diagnostic Operators
Here we will discuss about apache pig diagnostic operators. TheĀ loadĀ statement will simply load the data into the specified relation in Apache Pig. To verify the execution of theĀ LoadĀ statement, you have…
Here we will discuss about apache pig diagnostic operators. TheĀ loadĀ statement will simply load the data into the specified relation in Apache Pig. To verify the execution of theĀ LoadĀ statement, you have…
Dropping an Index You can drop an index using the command DROP INDEX. Its syntax is as follows ā DROP INDEX <identifier> Given below is an example to drop an index…
In the previous chapter, we learnt how to load data into Apache Pig. You can store the loaded data in the file system using theĀ storeĀ operator. This chapter explains how to…
Creating an Index using Cqlsh You can create an index in Cassandra using the command CREATE INDEX. Its syntax is as follows ā CREATE INDEX <identifier> ON <tablename> Given below is an…
In general, Apache Pig works on top of Hadoop. It is an analytical tool that analyzes large datasets that exist in theĀ HadoopĀ FileĀ System. To analyze data using Apache Pig, we have…
Truncating a Table You can truncate a table using the TRUNCATE command. When you truncate a table, all the rows of the table are deleted permanently. Given below is the…
Dropping a Table You can drop a table using the command Drop Table. Its syntax is as follows ā Syntax DROP TABLE <tablename> Example The following code drops an existing table…
Pig Latin is the language used to analyze data in Hadoop using Apache Pig. In this chapter, we are going to discuss the basics of Pig Latin such as Pig…
After invoking the Grunt shell, you can run your Pig scripts in the shell. In addition to that, there are certain useful shell and utility commands provided by the Grunt…
Altering a Table You can alter a table using the command ALTER TABLE. Given below is the syntax for creating a table. Syntax ALTER (TABLE | COLUMNFAMILY) <tablename> <instruction> Using ALTER…