Blog Archives

The inevitable “Task not serializable” SparkException

The good old: org.apache.spark.SparkException: Task not serializable usually surfaces at least once in a spark developer’s career, or in my case, whenever enough time has gone by since I’ve seen it that I’ve conveniently forgotten its existence and the fact

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SCNA 2016

Software Craftsmanship North America – a community of software professionals focused on the skills and craft required to produce enduring proficiency in software development – hosted their annual conference at the Town and Gown facility at USC on Friday October 21st, 2016,

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Apache Zeppelin 0.5.6 : spark 1.6.1 client : hadoop 2.6.0-cdh5.5.1 in remote cluster

Some trials, some errors, some success… Downloaded latest release which at this time is 0.5.6 from here and unzipped into incubator-zeppelin folder. Built using this command: mvn clean package -DskipTests -Pspark-1.5 -Dspark.version=1.6.1 -Dhadoop.version-2.6.0-cdh5.5.1 -Phadoop-2.6 -Pyarn caveat coder: -Pspark-1.5 corresponds to the

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TDD demo at SBHS Computer Science Academy

In March this year I roped in a few of my colleagues from CJ Affiliate to demo a little Test Driven Development to the students at Santa Barbara High School’s Computer Science Academy. The students were impressive – engaged, curious

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