Evaluation of Spark (on YARN) at Twitter, and lessons learnt from our ongoing experiments. Read less
![Spark at Twitter - Seattle Spark Meetup, April 2014](https://cdn-ak-scissors.b.st-hatena.com/image/square/27f0d682ef8e59c90061eb33ed82f133460ffe36/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fseattlesparkmeetup-sparkattwitter-140423230429-phpapp01-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)
1) Twitter migrated their Hadoop infrastructure from Hadoop 1 to Hadoop 2 to address scalability challenges and improve efficiency from tens of thousands of servers and hundreds of petabytes of data. 2) The migration involved extensive testing of Hadoop 2 configurations and dependent components before rolling out to production clusters supporting various use cases such as analytics, personalizatio
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