Spark Developer Scripts
This directory contains scripts useful to developers when packaging, testing, or committing to Spark.
Many of these scripts require Apache credentials to work correctly.
## What changes were proposed in this pull request? Move `docker` dirs out of top level into `external/`; move `extras/*` into `external/` ## How was this patch tested? This is tested with Jenkins tests. Author: Sean Owen <sowen@cloudera.com> Closes #11523 from srowen/SPARK-13595.