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Mansour Raad
649 followers -
Loving Life
Loving Life

649 followers
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Calculating weighted variance using Spark
Spark provides a stat() function on a DoubleRDD to calculate in a robust way the count, mean and standard deviation of the double values. The inputs are unweighted (or all have a weight of 1), and I ran into a situation where I needed to perform the statist...

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A Whale, an Elephant, a Dolphin and a Python walked into a bar....
This project started simply as an experiment in trying to execute a Spark job that writes to specific path locations based on partitioned key/value tuples. Once I figured out the usage of rdd.saveAsHadoopFile with a customized MultipleOutputFormat implement...

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Accumulo and Docker
If you want to experiment with BigData and Accumulo , then you can use docker to build an image and run a single node instance using this docker project. In that container, you will have a single instance of Zookeeper, YARN, HDFS and Accumulo. You can 'hado...

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Scala Hexagon Tessalation
I've committed myself for 2015 to learn Scala , and I wish I did that earlier after 20 years of Java (wow, that makes me sound old :-).  I've placed on Github a simple Scala based library to compute the row/column pair of a planar x/y value on a hexagonal g...

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Spark SQL DBF Library
Happy new year all…It’s been a while. I was crazy busy from May till mid December of last year implementing BigData  geospatial solutions at client sites all over the world. Was in Japan a couple of times, Singapore, Malaysia, UK, and do not recall the time...

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#dailyinspiration  If at first you don't succeed, try again!
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