Apache Tajo – SQL Queries
This chapter explains about the following significant Queries. PredicatesExplainJoin Let us proceed and perform the queries. Predicates Predicate is an expression which is used to evaluate true/false values and UNKNOWN.…
Talend – Working with Pig
In this chapter, let us learn how to work with a Pig job in Talend. Creating a Talend Pig Job In this section, let us learn how to run a…
Talend – Map Reduce
In the previous chapter, we have seen how to Talend works with Big Data. In this chapter, let us understand how to use map Reduce with Talend. Creating a Talend…
Aggregate & Window Functions
This chapter explains the aggregate and window functions in detail. Aggregation Functions Aggregate functions produce a single result from a set of input values. The following table describes the list…
Talend – Hadoop Distributed File System
In this chapter, let us learn in detail about how Talend works with Hadoop distributed file system. Settings and Pre-requisites Before we proceed into Talend with HDFS, we should learn…
Talend – Big Data
The tag line for Open Studio with Big data is “Simplify ETL and ELT with the leading free open source ETL tool for big data.” In this chapter, let us…
Talend – Handling Job Execution
In this chapter, let us understand handling a job execution in Talend. To build a job, right click the job and select Build Job option. Mention the path where you…
Talend – Managing Jobs
In this chapter, let us look into managing jobs and the corresponding functionalities included in Talend. Activating/Deactivating a Component Activating/Deactivating a Component is very simple. You just need to select…
Apache Tajo – SQL Statements
In the previous chapter, you have understood how to create tables in Tajo. This chapter explains about the SQL statement in Tajo. Create Table Statement Before moving to create a…
Apache Tajo – Table Management
A table is a logical view of one data source. It consists of a logical schema, partitions, URL, and various properties. A Tajo table can be a directory in HDFS,…
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