
Co-creator of @DayCaptainApp - developer productivity tool with vim-keybindings, clean UI, open API | Developer | Data Engineer
Munich
Joined March 2016
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Here's why you fail to accomplish what you want most.
Read this thread and learn something about yourself. 🚀
// A Thread //
#productivity #timemanagement #success
Apache Spark with Scala Course - Video 10
🔨 By now, we have only talked about how to use Spark.
🕵️♀️ Today, we take the first glance at what it actually is and what we use it for ...
youtu.be/KT0pkhAXDBw
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Apache Spark with Scala Course - Video 9️⃣
Let's plug everything we learned together in our first assignment ...
Loading data, inferring schemas, accessing, renaming and transforming columns.
youtu.be/nxJHiPIe9SU
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Apache Spark with Scala Course - Video 8️⃣
🚀 There is also a SQL API in Spark ...
🧐 Should we use it or not?
💡 Which functions can we use in our SQL expressions?
youtu.be/3GrfsF_095o
Apache Spark with Scala Course - Video 7️⃣
💡 There exist more functions to transform columns in Spark SQL.
🧚♂️ They offer a wide world of data transformations ...
We'll explore their implementation and documentation.
youtu.be/k-UBdSLlEOs
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Many companies are training their Data Engineers "in-production".
Why?
No time ...
Is that a good idea?
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Apache Spark with Scala Course - Video 6️⃣
❓ What can we do with Columns in the SparkSQL API?
💡 Have you ever looked at the Column Class in SparkSQL?
✅ We'll explore the source code and the documentation.
youtu.be/9udk6AcgrLU
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Apache Spark with Scala Course - Video 5️⃣
How can we reference columns in the Spark DSL?
When working with the SparkSQL DSL, we mostly would like to do something with the columns of a Dataset.
youtu.be/b_WX3QPCUOI
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Apache Spark with Scala Course - Video 4
💡 What's the Spark SQL API?
❓ How do Datasets and DataFrames relate?
🔎 What's the Spark DSL?
youtu.be/jQBYL_zpbhs
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Apache Spark with Scala Course - Video 3
✅ Inspect the schema of a DataFrame
📖 Explore Spark SQL data types in the official documentation
🔎 Inferring the schema while reading a csv file
youtu.be/as6F8TRmyl8
#ApacheSpark #Scala #Course
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🚨 New video in Apache Spark with Scala Course - Video 10: What is Spark?
🔨 By now, we have only talked about how to use Spark.
🕵️♀️ Today, we take the first glance at what it actually is and what we use it for ...
youtu.be/KT0pkhAXDBw
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In part 2️⃣ of the #ApacheSpark with #Scala course, we will use our development setup to run our first Spark application. 💯
- Read csv file and explore documentation
- Run local standalone Spark (3.5.0 with Java 17)
- Explore @intellijidea run templates
youtu.be/i_HyEzEOW-E?si=8GZx…
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I'm creating a free Apache Spark video course on YouTube. 🚀
✅ Now pre-knowledge required
💡 Step-by-step explanations
🏋️♀️ Hands-on exercises
Check out Video 1: Setting up Spark (IntelliJ, SBT, Scala, Spark)
youtu.be/4kb5Ju3TJLs
#apachespark
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Consequently, Spark core’s optimization strategy is limited to pipeline narrow transformations into stages.
towardsdatascience.com/the-b…
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A sampling strategy enables us to find the structural contexts of two nodes in a graph.
We can use these contexts to find their similarity - for example using the Jaccard set similarity metric.
node2vec uses contexts to map nodes to vectors.
youtu.be/pS_POUVFXvk
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What's the fundamental principle enabling Apache Spark to parallelize workload?
I'm creating a video series on the internals of Spark.
The first video is a deep dive into Spark's most profound principle: MapReduce.
youtu.be/BKecoKKs91A
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How to build a recommendation engine in #neo4j.
⏫ Naive Bayes classification
🚀 Performs as good as a deep neural network
✅ Just a handful lines of code
youtu.be/YbHbsaJhhKM
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Naive Bayes classification is naive because it assumes independence of features.
The maths are very simple.
However, it works astonishingly well for our recommendation engine.
youtu.be/YbHbsaJhhKM
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To materialize a physical plan, #ApacheSpark schedules tasks on the workers.
In fact, the workers have one single functionality: to execute a task.
Let's explore how a physical plan is transformed into schedulable tasks.
youtu.be/-iF7_tDtc3k
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A naive bayes classifier can yield similar results as a neural network.
Learn how to implement one in plain Cypher:
youtu.be/YbHbsaJhhKM
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