Use maven's parallel mode to improve test time. Use 1 thread per core (#5449)

chingor13 · web-flow · commit 6f9d2396bfa3 · 2019-06-07T12:57:28.000-07:00
diff --git a/.kokoro/build.sh b/.kokoro/build.sh
@@ -51,7 +51,11 @@ if [[ "${SKIP_INTEGRATION_TESTS_IF_NO_CHANGES}" == "true" ]] &&
   fi
 fi
 
-mvn install -DskipTests=true -Dmaven.javadoc.skip=true -Dgcloud.download.skip=true -B -V
+mvn install -B -V \
+  -DskipTests=true \
+  -Dmaven.javadoc.skip=true \
+  -Dgcloud.download.skip=true \
+  -T 1C
 
 # prepend Kokoro root directory onto GOOGLE_APPLICATION_CREDENTIALS path
 if [[ ! -z "${GOOGLE_APPLICATION_CREDENTIALS}" ]]; then
diff --git a/.kokoro/release/publish_javadoc.sh b/.kokoro/release/publish_javadoc.sh
@@ -31,7 +31,7 @@ pushd $(dirname "$0")/../../
 python3 -m pip install gcp-docuploader
 
 # compile all packages
-mvn clean install -B -DskipTests=true
+mvn clean install -B -DskipTests=true -T 1C
 
 build_and_publish_site() {
   DIRECTORY=$1
@@ -63,4 +63,4 @@ build_and_publish_site() {
 
 # TODO (chingor): split all the artifacts
 build_and_publish_site google-api-grpc
-build_and_publish_site google-cloud-clients
+build_and_publish_site google-cloud-clients
