Upgrade to Spark 3.5 / Scala 2.13, add dependabot and CI#4
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Modernize build from Spark 1.6 / Scala 2.10 / sbt 0.13:
- Scala 2.13.14, Spark 3.5.1, scopt 4.1.0, sbt 1.10.5
- Drop sbt-spark-package, sbt-idea, spark-csv (built-in now)
- Add sbt-assembly with merge strategy
Source migrations for Spark 3.5 API:
- SparkConf+SparkContext+SQLContext/HiveContext -> SparkSession
- com.databricks.spark.csv -> built-in .csv(...)
- DataFrame.map(Row) -> .rdd.map for RDD output
- Symbol literals df.as('a) -> df.as("a")
- MulticlassMetrics.precision (removed) -> accuracy
Add .github/dependabot.yml for sbt and github-actions.
Compile + test on push/PR to master with JDK 17 and sbt cache.
ubuntu-latest no longer ships sbt preinstalled.
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Summary
.rdd.mapforRowpatterns,df.as("a")strings,MulticlassMetrics.accuracy(no-arg precision/recall/fMeasure removed in Spark 3)..github/dependabot.yml(sbt + github-actions, weekly)..github/workflows/ci.yml(JDK 17, sbt cache, compile + test on push/PR to master).Test plan
sbt compile— clean, 0 warnings, 0 errors locallyspark-submit --class com.combient.sparkjob.tedsds.PrepareTrainData ...)