Minor adjustments for graph generation on CI

Author: szarnyasg

.travis.yml

@@ -13,12 +13,14 @@ script:
 # test if the output of the mvn command contained an "[INFO] BUILD SUCCESS" entry
 #- grep 'BUILD SUCCESS' mvn.log
 #- ls -al test_data
-- wget http://archive.apache.org/dist/hadoop/core/hadoop-2.6.0/hadoop-2.6.0.tar.gz
+- wget -q http://archive.apache.org/dist/hadoop/core/hadoop-2.6.0/hadoop-2.6.0.tar.gz
 - tar xf hadoop-2.6.0.tar.gz
 - export HADOOP_CLIENT_OPTS="-Xmx2G"
 - export HADOOP_HOME=`pwd`/hadoop-2.6.0
 - export LDBC_SNB_DATAGEN_HOME=`pwd`
 - ./run.sh
+- ls -al social_network
+- ls -al substitution_parameters
 #- if [ "$TRAVIS_BRANCH" = "master" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then ./deploy.sh; fi
 notifications:
   slack: ldbcouncil:OrBanrJ7l0EHQbj8T5YdJYhd