Sqoop – Eval
In this we will describes how to use the Sqoop āevalā tool. It allows users to execute user-defined queries against respective database servers and preview the result in the console.…
Apache Solr – Retrieving Data
In this chapter, we will discuss how to retrieve data using Java Client API. Suppose we have a .csv document named sample.csv with the following content. 001,9848022337,Hyderabad,Rajiv,Reddy 002,9848022338,Kolkata,Siddarth,Battacharya 003,9848022339,Delhi,Rajesh,Khanna You can index…
Network Security ā Critical Necessity
Information and efficient communication are two of the most important strategic issues for the success of every business. With the advent of electronic means of communication and storage, more and…
Network Security ā Firewalls
Almost every medium and large-scale organization has a presence on the Internet and has an organizational network connected to it. Network partitioning at the boundary between the outside Internet and…
Sqoop – Codegen
In this we will describes the importance of ācodegenā tool. From the viewpoint of object-oriented application, every database table has one DAO class that contains āgetterā and āsetterā methods to…
Apache Solr – Retrieving Data
In this chapter, we will discuss how to retrieve data using Java Client API. Suppose we have a .csv document named sample.csv with the following content. 001,9848022337,Hyderabad,Rajiv,Reddy 002,9848022338,Kolkata,Siddarth,Battacharya 003,9848022339,Delhi,Rajesh,Khanna You can index…
Apache Solr – Deleting Documents
Deleting the Document To delete documents from the index of Apache Solr, we need to specify the IDās of the documents to be deleted between the <delete></delete> tags. <delete> <id>003</id>…
Sqoop – Job
In this section we will describes how to create and maintain the Sqoop jobs. Sqoop job creates and saves the import and export commands. It specifies parameters to identify and…
Sqoop – Export
In this section we will describes how to export data back from the HDFS to the RDBMS database. The target table must exist in the target database. The files which…
Network Security ā Access Control
Network access control is a method of enhancing the security of a private organizational network by restricting the availability of network resources to endpoint devices that comply with the organizationās…
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