August 2019
Intermediate to advanced
560 pages
13h 41m
English
Content preview from Advanced Elasticsearch 7.0
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Source code
Let's recall how to build the k-means model from the Source code section of Chapter 17, Spark and Elasticsearch for Real-Time Analytics, in order to work on Java programming. We briefly describe some important methods with the source codes in EsSparkSQLImpl.java, which is from the com.example.esanalytics.spark.impl package, as follows:
- readValues(): The major function of this method is to use the createDataFrame() method from SparkSession to convert the IEX data into org.apache.spark.sql.Dataset. Then, it extracts some of the values by using the sql() method (from SparkSession) into another dataset, named dataSetAD, according to user-selected field names. The selected fields are used to create the anomaly detection model. However, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.