Chaoran Yu created SPARK-25254:
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             Summary: docker-image-tool should allow not building images for R 
and Python
                 Key: SPARK-25254
                 URL: https://issues.apache.org/jira/browse/SPARK-25254
             Project: Spark
          Issue Type: Improvement
          Components: Build
    Affects Versions: 2.4.0
            Reporter: Chaoran Yu


Suppose a user does not need R, so he builds Spark using make-distribution.sh 
without R to generate a runnable distribution. 

Then he runs docker-image-tool.sh to generate Docker images based off of the 
distribution just produced in the previous step. And then docker-image-tool.sh 
fails because the R image fails to build. This is counter-intuitive.

docker-image-tool.sh builds three images: regular, R and Python. 
make-distribution.sh allows users to specify whether to build Spark with R or 
Python, so should docker-image-tool.sh.



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