add debug statements

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Added timestamps in output to make debugging easier.
+
 ### Changed
 - Increased timeout from 60 to 120 seconds.
 

template/script.sh.erb

@@ -23,6 +23,9 @@
 # Start Jupyter Notebook server + Spark cluster
 #
 
+echo "Starting main script..."
+echo "TTT - $(date)"
+
 # Clean the environment
 module purge
 
@@ -88,6 +91,8 @@ else
 fi
 sleep 2
 
+echo "TTT - $(date)"
+
 # Create Spark worker launcher script
 export SPARK_WORKER_SCRIPT="${PWD}/spark-worker.sh"
 (
@@ -196,16 +201,22 @@ EOL
 # Set working directory to notebook root directory
 cd "${NOTEBOOK_ROOT}"
 
+echo "TTT - $(date)"
+
 # Setup Jupyter Notebook environment
 module use $MODULEPATH_ROOT/project/ondemand
 module load jupyter/python3.5
 module list
 
+echo "TTT - $(date)"
+
 # List available kernels for debugging purposes
 set -x
 jupyter kernelspec list
 { set +x; } 2>/dev/null
 
+echo "TTT - $(date)"
+
 # Launch Jupyter Notebook interface to Spark
 set -x
 jupyter notebook --config="${CONFIG_FILE}"