Rittman Mead Blog - Technical Insights

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A collection of 878 posts

OBIEE and ODI on Hadoop : Next-Generation Initiatives To Improve Hive Performance

The other week I posted a three-part series (part 1 [https://www.rittmanmead.com/blog/2014/12/going-beyond-mapreduce-for-hadoop-etl-pt-1-why-mapreduce-is-only-for-batch-processing/] , part 2 [https://www.rittmanmead.com/blog/2014/12/going-beyond-mapreduce-for-hadoop-etl-pt-2-introducing-apache-yarn-and-apache-tez/] and part 3 [https://www.rittmanmead.com/blog/2014/12/going-beyond-mapreduce-for-hadoop-etl-pt-3-introducing-apache-spark/] ) on going beyond MapReduce for Hadoop-based ETL, where I l

Rittman Mead BI Forum 2015 Call for Papers Now Open!

I’m very pleased to announce that the Call for Papers for the Rittman Mead BI Forum 2015 [https://docs.google.com/a/rittmanmead.com/forms/d/18XWPmrzr3te55rloDJyB8vFP9j8AUNKKryvOToGHBlA/viewform] is now open, with abstract submissions open to January 18th 2015. As in previous years the BI Forum will run over

Rittman Mead's Bar Optimizer

[http://lab.ritt.md/bar-optimizer.png] At Rittman Mead R&D, we have the privilege of solving some of our clients’ most challenging data problems. We recently built a set of customized data products that leverage the power of Oracle and Cloudera platforms and wanted to share some of

Linux cluster sysadmin -- OS metric monitoring with colmux

In this mini-series of blog posts I'm taking a look at a few very useful tools that can make your life as the sysadmin of a cluster of Linux machines. This may be a Hadoop cluster, or just a plain simple set of 'normal' machines on

Linux cluster sysadmin -- Parallel command execution with PDSH

In this series of blog posts I'm taking a look at a few very useful tools that can make your life as the sysadmin of a cluster of Linux machines easier. This may be a Hadoop cluster, or just a plain simple set of 'normal' machines

Linux cluster sysadmin -- SSH keys

In this short series of blog posts I'm going to take a look at a few very useful tools that can make your life as the sysadmin of a cluster of Linux machines easier. This may be a Hadoop cluster, or just a plain simple set of '

Six Months an ACE…”Boy, that escalated quickly"

Boy, that escalated quickly [http://youtu.be/FONN-0uoTHI]. I mean, my path to becoming an Oracle ACE since joining Rittman Mead! When I began with Rittman Mead back in March 2012, I wasn't planning on joining the ACE program. In fact, I really wasn't sure what

Going Beyond MapReduce for Hadoop ETL Pt.2 : Introducing Apache YARN and Apache Tez

In the first post [https://www.rittmanmead.com/blog/2014/12/going-beyond-mapreduce-for-hadoop-etl-pt-1-why-mapreduce-is-only-for-batch-processing/] in this three part series on going beyond MapReduce for Hadoop ETL, I looked at how a typical Apache Pig script gets compiled into a series of MapReduce jobs, and those MapReduce jobs pass data between themselves by

Going Beyond MapReduce for Hadoop ETL Pt.1 : Why MapReduce Is Only for Batch Processing

Over the previous few months I’ve been looking at the various ways you can load data into Hadoop, process it and then report on it using Oracle tools [https://www.rittmanmead.com/blog/2013/11/why-odi-dw-and-obiee-developers-should-be-interested-in-hadoop/] . We’ve looked at Apache Hive and how it provides a SQL layer

Rittman Mead Founder Member of the Red Expert Alliance

At Rittman Mead we’re always keen to collaborate with our peers and partners in the Oracle industry, running events such as the BI Forum in Brighton and Atlanta each year and speaking at user groups in the UK, Europe, USA and around the world. We were pleased therefore to

Rittman Mead anuncia su catálogo de cursos en Español y en Portugués.

[https://www.rittmanmead.com/blog/content/images/2016/05/07698Spanish_Portuguese_Training.png] [http://www.rittmanmead.com/rittman-mead-announces-its-training-catalog-in-spanish-and-portuguese/] [http://www.rittmanmead.com/rittman-mead-anuncia-o-seu-catalogo-de-cursos-em-espanhol-e-em-portugues/] Tenemos el agrado de anunciarles que desde ahora Rittman Mead ofrece su catálogo completo de cursos en Español y en Portugués. Esta es una gran noticia para

Auditing OBIEE Presentation Catalog Activity with Custom Log Filters

A question that I’ve noticed coming up a few times on the OBIEE OTN forums goes along the lines of “How can I find out who deleted a report from the Presentation Catalog?”. And whilst the BI Server’s Usage Tracking is superb for auditing who ran what report,

Analytics with Kibana and Elasticsearch through Hadoop - part 3 - Visualising the data in Kibana

In this post we will see how Kibana can be used to create visualisations over various sets of data that we have combined together. Kibana is a graphical front end for data held in ElasticSearch, which also provides the analytic capabilities. Previously we looked at where the data came from

Analytics with Kibana and Elasticsearch through Hadoop - part 2 - Getting data into Elasticsearch

Introduction In the first part of this series [https://www.rittmanmead.com/blog/2014/11/analytics-with-kibana-and-elasticsearch-through-hadoop-part-1-introduction/] I described how I made several sets of data relating to the Rittman Mead blog from various sources available through Hive. This included blog hits from the Apache webserver log, tweets, and metadata from

Analytics with Kibana and Elasticsearch through Hadoop - part 1 - Introduction

Introduction I’ve recently started learning more about the tools and technologies that fall under the loose umbrella term of Big Data [http://cdn.meme.am/instances/500x/47510205.jpg], following a lot of the blogs that Mark Rittman has written, including getting Apache log data into Hadoop [https://www.

Oracle BI Cloud Service for SaaS Application Reporting Part 1: Integrating BICS to Salesforce.com using REST APIs

Last monthMark Rittman [http://www.rittmanmead.com/author/mark-rittman/]covered a series of posts detailing theOracle BI Cloud Service (BICS) [https://cloud.oracle.com/business_intelligence], aimed at departmental users who want the power of OBIEE 11g without the need to stand-up their own infrastructure. If you’re coming in

Monitoring OBIEE with Elasticsearch, Logstash, and Kibana

Monitoring the health of an OBIEE system and diagnosing problems that may occur is a vital task for the system’s administrator and support staff. It’s one that at Rittman Mead we help customers with implementing themselves, and also provide as a managed service [http://www.rittmanmead.com/support/

Using rlwrap with Apache Hive beeline for improved readline functionality

rlwrap is a nice little wrapper in which you can invoke commandline utilities and get them to behave with full readline [http://www.gnu.org/software/bash/manual/html_node/Readline-Interaction.html#Readline-Interaction] functionality just like you’d get at the bash prompt. For example, up/down arrow keys to

First-timer tips for Oracle Open World

Last week I had the great pleasure to attend Oracle Open World (OOW) for the first time, presentingNo Silver Bullets - OBIEE Performance in the Real World [http://www.slideshare.net/themoff/oow14-robin-moffatt-no-silver-bullets-obiee-performance-in-the-real-world] at one of the ODTUG user group sessions on the Sunday. It was a blast, as the

Adding Oracle Big Data SQL to ODI12c to Enhance Hive Data Transformations

An updated version of the Oracle BigDataLite VM [http://www.oracle.com/technetwork/database/bigdata-appliance/oracle-bigdatalite-2104726.html] came out a couple of weeks ago, and as well as updating the core Cloudera CDH software to the latest release it also included Oracle Big Data SQL [http://www.oracle.com/us/

News and Updates from Oracle Openworld 2014

It’s the Saturday after Oracle Openworld 2014 [http://www.oracle.com/openworld], and I’m now home from San Francisco and back in the UK. It’s been a great week as usual, with lots of product announcements and updates to the BI, DW and Big Data products we

EPM and BI Meetup at Next Week's Openworld (and details of our Oracle DI Speakeasy)

Just a short note to help publicise the Oracle Openworld 2014 EPM and BI Meetup [http://www.meetup.com/Oracle-Open-World-Essbase-EPM-meetup/events/205491072/] that’s running next week, organised by Cameron Lackpour and Tim Tow from the ODTUG board. This is an excellent opportunity for EPM and BI developers and customers