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Import Data from Mongo DB to Elasticsearch using Elasticsearch River

           Importing data from Mongo DB to Elasticsearch requires Mongo DB to have replica set enabled. Once the replica set is enabled, Mongo DB populates the oplog (operation log) as and when we add documents to the collection in the database (except database named local, which is used by Mongo DB to… Read More »

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Moto E/Moto G/Moto X – Stuck in Circle Blue M Screen – Solved

           I personally own Moto E and all of a sudden the mobile restarted and got stuck in Blue M screen after the boot animation screen. This problem was also faced by the people using Moto G and Moto X. I restarted the mobile few times and there was no improvement.… Read More »

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Refilling the Inkjet Cartridges – ALL YOU NEED TO KNOW

       Many of us use printer. It may be in home or office. We usually own inkjet printers if its for basic use. The main advantage of inkjet printers are its low cost. We used to refill the cartridge once the ink gets over which is an another added advantage. Cartridges are just… Read More »

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Linked List in C- Insert Node at Start of the Linked List

DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Try DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Linked List in C- Insert Node at Start of the Linked List :            Linked List is a data structure which is used to store and retrieve data. Consider the following image.  … Read More »

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Neo4j Query Tutorial – MATCH and MERGE

Example 1: Match two nodes and create a relationship between them. MATCH (person1:LABEL{id:'1234'}),(person2:LABEL{id:'5678'}) MERGE (person1)-[r:FRIEND]-(person2) Example 2: Match two nodes and create/update a relation between them. Optionally set properties to the nodes or relationships with ON CREATE SET or ON MATCH SET. Use r+={property:’value’} to add properties or update existing properties. MATCH (user1:USER{id:'123'}),(user2:USER{id:'456'}) MERGE (user1)-[r:FRIEND]-(user2) ON CREATE SET… Read More »

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