使用sbt在Spark中构建子项目

Question

I want to build subproject in Spark with sbt. I found this example and it works

$ ./build/sbt -Phive -Phive-thriftserver  (build)
sbt (spark)> project hive (switch to subproject)
sbt (hive)> testOnly *.HiveQuerySuite -- -t foo ( run test case)

However, I tried the following but it does not build but quit ./build/sbt -mllib

I do not know how does the author figure out -Phive -Phive-thriftserver . I cannot find this in Spark source code.

I just want to do the exact same thing as the example but with a different subproject.

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This is not asking how to use projects to print out all available projects.

Answer 1

Specify the project scope:

./build/sbt mllib/compile

refer to: http://www.scala-sbt.org/0.13/docs/Scopes.html