Apache Hive sub-minute maven dev build

mvn-subminute-hive-build.txt

Build times for Apache Hive master on my Mac Book Pro

# No source code changes (first build not considered as mvn will download all dependencies and cache it locally)

# Base: Clean offline quite build
$ time mvn clean install -DskipTests -o -q
real	3m9.005s
user	7m14.864s
sys	0m40.295s

# Parallel (using 1C gave best build times) build
$ time mvn clean install -DskipTests -T 1C -o -q
real	2m24.415s
user	8m12.243s
sys	0m54.905s

# With MAVEN_OPTS
$ time MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1" mvn clean install -DskipTests -T 1C -o -q
real	2m12.872s
user	7m46.879s
sys	0m49.696s

# Skip clean
$ MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1"
$ time MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1" mvn install -DskipTests -T 1C -o -q
real	1m31.403s
user	5m13.439s
sys	0m37.885s

# Skip shade for jdbc and druid-handler (requires HIVE-17822)
# NOTE: if you are changing/testing jdbc or druid you may want to skip this step
$ time MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1" mvn install -DskipShade -DskipTests -T 1C -o -q
real	1m20.130s
user	4m37.645s
sys	0m39.897s

# Skip remote resource plugin
$ time MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1" mvn install -DskipShade -DskipTests -Dremoteresources.skip=true -T 1C -o -q
real	0m37.485s
user	0m52.652s
sys	0m14.118s

# Build ql and downstream modules
$ time MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1" mvn install -DskipShade -DskipTests -Dremoteresources.skip=true -T 1C -o -q -pl ql -amd
real	0m31.827s
user	1m50.349s
sys	0m9.494s

# Build llap-server and downstream modules
$ time MAVEN_OPTS="-XX:+TieredCompilation -XX:TieredStopAtLevel=1" mvn install -DskipShade -DskipTests -Dremoteresources.skip=true -T 1C -o -q -pl llap-server -amd
real	0m9.147s
user	0m20.189s
sys	0m3.056s