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Spark Summit EU 2015: SparkUI visualization: a lens into your application

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Your application is slow but you don’t know why. It could be doing unnecessary shuffles, or evicting heavily-used cached data from memory, or suffering from data skew, or… With the recent visualization additions to the SparkUI, users can now quickly pinpoint bottlenecks in their applications and derive compelling insights about their usages of Spark. In this talk, we will walk through how to leverage these visuals to illuminate the design decisions of several example Spark applications. The applications showcased will include those that use SparkSQL, Spark Streaming, MLlib, and dynamic allocation.

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