Further reduction in noise and made pyspark tests to fail fast.

dev/run-tests

@@ -49,7 +49,7 @@ dev/scalastyle
 echo "========================================================================="
 echo "Running Spark unit tests"
 echo "========================================================================="
-sbt/sbt assembly test | grep -v "info.*Resolving"
+sbt/sbt assembly test | grep -v -e "info.*Resolving" -e "warn.*Merging" -e "info.*Including"
 
 echo "========================================================================="
 echo "Running PySpark tests"
@@ -63,5 +63,5 @@ echo "========================================================================="
 echo "Detecting binary incompatibilites with MiMa"
 echo "========================================================================="
 ./bin/spark-class org.apache.spark.tools.GenerateMIMAIgnore
-sbt/sbt mima-report-binary-issues
+sbt/sbt mima-report-binary-issues | grep -v -e "info.*Resolving" 
 

python/run-tests

@@ -29,8 +29,18 @@ FAILED=0
 rm -f unit-tests.log
 
 function run_test() {
-    SPARK_TESTING=0 $FWDIR/bin/pyspark $1 2>&1 | tee -a unit-tests.log
+    SPARK_TESTING=0 $FWDIR/bin/pyspark $1 2>&1 | tee -a > unit-tests.log
     FAILED=$((PIPESTATUS[0]||$FAILED))
+
+    # Fail and exit on the first test failure.
+    if [[ $FAILED != 0 ]]; then
+        cat unit-tests.log | grep -v "^[0-9][0-9]*" # filter all lines starting with a number.
+        echo -en "\033[31m"  # Red
+        echo "Had test failures; see logs."
+        echo -en "\033[0m"  # No color
+        exit -1
+    fi
+
 }
 
 run_test "pyspark/rdd.py"
@@ -46,12 +56,7 @@ run_test "pyspark/mllib/clustering.py"
 run_test "pyspark/mllib/recommendation.py"
 run_test "pyspark/mllib/regression.py"
 
-if [[ $FAILED != 0 ]]; then
-    echo -en "\033[31m"  # Red
-    echo "Had test failures; see logs."
-    echo -en "\033[0m"  # No color
-    exit -1
-else
+if [[ $FAILED == 0 ]]; then
     echo -en "\033[32m"  # Green
     echo "Tests passed."
     echo -en "\033[0m"  # No color