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How Spark Works: RDDs And DAGs

Shubham Agarwal gets into the way that Spark translates operations on Resilient Distributed Datasets into actions:When we do a transformation on any RDD, it gives us a new RDD. But it does not start the execution of those transformations. The execution is performed only when an action is performed on the new RDD and gives ...

Five Books For Learning Kafka

Data Flair has a guide to five books to help you learn Apache Kafka:The book “Kafka: The Definitive Guide” is written by engineers from Confluent andLinkedIn who are responsible for developing Kafka.They explain how to deploy production Kafka clusters, write reliable event-driven microservices, and build scalable stream-processing applications with this platform. It contains detailed examples as well. Through this ...

Evolution of Hadoop

Over the course of the next month, we will be going deeper into some of the trends uncovered in our 2018 Big Data Activation Report. In this post, we look at the trend of companies who have migrated their Hadoop resource manager from MapReduce (Hadoop 1) to YARN (Hadoop 2) in the past two years ...

BDR between kerberos enabled environment Enabling Replication Between Clusters with Kerberos Authentication

Home > bdr, cloudera > BDR between kerberos enabled environment Enabling Replication Between Clusters with Kerberos Authentication BDR between kerberos enabled environment Enabling Replication Between Clusters with Kerberos AuthenticationApril 23, 2018sercanbilgicLeave a commentGo to commentsTo enable replication between clusters, additional setup steps are required to ensure that the source and destination clusters can communicate.Note: If either the source or ...

Disable all SSL certificate and go back to the initial state

Home > big data, cloudera, ssl > Disable all SSL certificate and go back to the initial state Disable all SSL certificate and go back to the initial stateApril 23, 2018sercanbilgicLeave a commentGo to commentsDisable all SSL certificate and go back to initial state.1. All steps are done as ‘root’ user.2. If you have passwordless ssh setup on ...

Enable SSL over cluster via SAN(subject alternative name)

Home > big data, cloudera, ssl > Enable SSL over cluster via SAN(subject alternative name) Enable SSL over cluster via SAN(subject alternative name)April 23, 2018sercanbilgicLeave a commentGo to commentsStep-by-step guideOn BDA V4.5 and higher using certificates signed by a user’s Certificate Authority for web consoles and for Hadoop network encryption is supported. The support includes use of a ...

Blockchain: Transforming your Business and Our World

[unable to retrieve full-text content]This week, I spoke at the Global Blockchain Conference in Kuala Lumpur and at Windays 2018 in Porec, Croatia and I had some very interesting discussions with the participants on the enormous potential of Blockchain. Blockchain has a lot of potential for organisations to improve their bottom line, but it also ...