Tag Archives: nosql

Simple Things You Can Learn From Cassandra Nodetool (Monitor/Manage) For DC/OS


Cassandra native tool called nodetool is used for monitoring and managing cassandra cluster for dcos Continue reading

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Posted in Best Practices, big data, Cassandra, cluster, NoSql | Tagged , , , , , , , , , , , , , | 2 Comments

Data modeling in Cassandra


Role of Partitioning & Clustering Keys in Cassandra Primary and Clustering Keys should be one of the very first things you learn about when modeling Cassandra data.  With this post I will cover what the different types of Primary Keys … Continue reading

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Business Intelligence-Data Visualization: Tableau


Spark, Bigdata, NoSQL, Hadoop are some of the most using and top in charts technologies that we frequently use in Knoldus, when these terms used than one thing comes into picture is ‘Huge Data, millions/billions of records’ Knoldus developers use … Continue reading

Posted in Scala, Tableau | Tagged , , , , , , , , | 2 Comments

Cassandra Counter Column And Table


Blog Describes the usage of counter column and table in Cassandra . Continue reading

Posted in big data, Cassandra, NoSql, Scala | Tagged , , , , | 5 Comments

Cassandra Data Modeling – Primary , Clustering , Partition , Compound Keys


In this post we are going to discuss more about different keys available in Cassandra . Primary key concept in Cassandra is different from Relational databases. Therefore it is worth spending time to understand this concept. Lets take an example … Continue reading

Posted in Best Practices, big data, Cassandra, database, NoSql, Scala | Tagged , , , , , , | 4 Comments

Apache spark + cassandra: Basic steps to install and configure cassandra and use it with apache spark with example


To build an application using apache spark and cassandra you can use the datastax spark-cassandra-connector to communicate with spark. Before we are going to communicate with spark using connector we should know how to configure cassandra. So following are prerequisite … Continue reading

Posted in Scala, Spark | Tagged , , , , | 7 Comments

Solution for Riak 500 Internal Server Error


I am new to Riak and learning it. Few days ago, I got 500 Internal Server Error exception while inserting data in a Riak bucket. It was weird because I was able to insert same data in different bucket. I … Continue reading

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