This is the blog post feed for OpenCore 2021-04-14T08:43:50Z OpenCore GmbH & Co. KG http://www.opencore.com/ 2ac086543bb4ab5a18b058627de5cc6e 2021-04-14T00:00:00Z

Introducing Stackable - An Alternative Big Data Distribution

Sönke Liebau 0fe8aecd489a852f597ba51b0367b21e 2019-07-12T00:00:00Z

Summary of the changes Cloudera introduced

Lars Francke 0e4c52e5b0c02bc8125a2aa4862493d0 2019-02-21T00:00:00Z

Introducing Apache Training (incubating)

Lars Francke 46b8b27fc3e08426895f3401ccf15c45 2018-11-07T00:00:00Z

We've developed a Parcel & CSD for Apache Knox

Lars Francke 9d123afd210a7abd78fcc7a4b60eb61c 2018-08-24T00:00:00Z

An Ansible playbook to generate a set of server and client keystores

Sönke Liebau 6be18601e5130463a1fa9ebcb3a82d78 2018-08-06T00:00:00Z

This blog post show you how we debugged and (finally!) solved a weird (to us) issue

Lars Francke c0f6084f55c22f59a44b342f0258fb5a 2018-06-11T00:00:00Z

Just a quick update on what we're up to this year

Lars Francke d05c67b8753dd59585ace645863debfd 2018-06-11T00:00:00Z

This is the story of how we got started on Azure

Lars Francke 6f473d30bd36be35649b7bbb6d031c2c 2018-05-27T00:00:00Z

This is the story of how we got started on Azure

Lars Francke d39a2e0267ff6178f55b066bd67e77d1 2018-03-22T00:00:00Z

Introducing the sharedPrefixes option for Spark Hive integration

Lars Francke 866b6292cfadccb96cc2951ce2d7c0be 2018-03-03T00:00:00Z

A PoC implementation to extend Kafka authorization features to allow for group based ACLs

Sönke Liebau 47b3571408233fffbab8cbe1cf2c28ea 2017-05-08T00:00:00Z

Everything you were afraid to ask about SAP Vora.

Lars Francke 9573603c473602d07a7bead6b723a387 2017-03-10T00:00:00Z

A quick reference for Kerberos encryption types

Lars Francke 5d931260a39917148fe27d2235bf4b72 2017-03-01T00:00:00Z

We'll tell you where you can see us speaking in the coming two months.

Lars Francke 0dd2b5d541a29ed3510d5786a5f7674a 2017-02-05T00:00:00Z

This blog post explains how to get Spark 2.0 Streaming running on a HDP 2.4 cluster against a SSL secured Kafka

Oliver Meyn (Guest blog) b2655eabb96915859cd7283c85566381 2017-01-31T00:00:00Z

By default Kafka MirrorMaker can only mirror messages from one topic into a topic of the same name on the mirror cluster, but by implementing a custom message handler this behavior can be changed.

Sönke Liebau e92d328a480e4c92bebd217e241ff55e 2016-10-27T00:00:00Z

A simple process to demonstrate efficient bulk loading into HBase using Spark. The method used does not rely on additional dependencies, and results in a well partitioned HBase table with very high, or complete, data locality. This method should work with any version of Spark or HBase.

Tim Robertson (Guest blog) https://plus.google.com/+timrobertson100 03fac456a45b2eeb1182de15e9c8d34d 2016-07-27T00:00:00Z

A small demo showing how to process Twitter stream data with Kafka Streams.

Sönke Liebau bbddd9350c0a125b19b4c8e7d3d988e3 2016-05-19T00:00:00Z

The way to pass user names to a Hadoop cluster differs subtly depending on whether or not the cluster runs in secure mode. Often, these differences are not fully understood and create issues, so in this post I will explain the basic principles for authentication based on the shared UserGroupInformation class in Hadoop.

Lars George 1d355d8ba4e24adf169724982c370c70 2016-03-18T00:00:00Z

Running MapReduce or Spark jobs on YARN that process data in HBase is easy… or so they said until someone added Kerberos to the mix! Learn how using HBase from Spark in cluster mode requires some extra steps to enable secure access to the provided services.

Lars George https://plus.google.com/+LarsGeorge 09ab9df9a2b52b0f8d601586dc2e7fbf 2016-03-17T00:00:00Z

Want to know more about who OpenCore is, and what the company is all about? This post has the answers you are looking for.

Lars Francke