Revert travis changes [ubuntu & python upgrade] (#320)

* Revert "Move to xenial (Ubuntu 16.04) for Travis CI (#319)"

This reverts commit eb543ee.

* Revert "Add Python 3.7 and 3.8 (#318)"

This reverts commit 75217a4.

Co-authored-by: bogdan kyryliuk <bogdankyryliuk@dropbox.com>

Author: bkyryliuk

.travis.yml

@@ -1,28 +1,20 @@
 sudo: required
 language: python
-dist: xenial
+dist: trusty
 matrix:
   include:
     # https://docs.python.org/devguide/#status-of-python-branches
     # One build pulls latest versions dynamically
-    - python: 3.8
-      env: CDH=cdh5 CDH_VERSION=5 PRESTO=RELEASE
-    - python: 3.7
-      env: CDH=cdh5 CDH_VERSION=5 PRESTO=RELEASE
     - python: 3.6
-      env: CDH=cdh5 CDH_VERSION=5 PRESTO=RELEASE
+      env: CDH=cdh5 CDH_VERSION=5 PRESTO=RELEASE SQLALCHEMY=sqlalchemy>=1.3.0
     - python: 3.6
-      env: CDH=cdh5 CDH_VERSION=5.11 PRESTO=0.147
+      env: CDH=cdh5 CDH_VERSION=5.10.1 PRESTO=0.147 SQLALCHEMY=sqlalchemy>=1.3.0
     - python: 3.5
-      env: CDH=cdh5 CDH_VERSION=5.11 PRESTO=0.147
+      env: CDH=cdh5 CDH_VERSION=5.10.1 PRESTO=0.147 SQLALCHEMY=sqlalchemy>=1.3.0
     - python: 3.4
-      env: CDH=cdh5 CDH_VERSION=5.11 PRESTO=0.147
+      env: CDH=cdh5 CDH_VERSION=5.10.1 PRESTO=0.147 SQLALCHEMY=sqlalchemy>=1.3.0
     - python: 2.7
-      env: CDH=cdh5 CDH_VERSION=5.11 PRESTO=0.147
-  addons:
-    apt:
-      packages:
-        - oracle-java8-installer
+      env: CDH=cdh5 CDH_VERSION=5.10.1 PRESTO=0.147 SQLALCHEMY=sqlalchemy>=1.3.0
 install:
   - ./scripts/travis-install.sh
   - pip install codecov

scripts/travis-install.sh

@@ -7,7 +7,8 @@ deb-src https://archive.cloudera.com/${CDH}/ubuntu/${DISTRIB_CODENAME}/amd64/cdh
 sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 327574EE02A818DD
 sudo apt-get -q update
 
-sudo apt-get -q install -y python-dev g++ libsasl2-dev maven
+sudo apt-get -q install -y oracle-java8-installer python-dev g++ libsasl2-dev maven
+sudo update-java-alternatives -s java-8-oracle
 
 #
 # LDAP
@@ -64,6 +65,8 @@ cp -r $(dirname $0)/travis-conf/presto presto-server/etc
 #
 # Python
 #
+
+pip install $SQLALCHEMY
 pip install -e .
 pip install -r dev_requirements.txt