Spark not able to run in yarn cluster mode

I am trying to execute my code on a yarn cluster

The command which I am using is

$SPARK_HOME/bin/spark-submit \
    --class "MyApp" \
    target/scala-2.10/my-application_2.10-1.0.jar \
    --master yarn-cluster \
    --num-executors 3 \
    --driver-memory 6g \
    --executor-memory 7g \
    <outputPath>

But, I can see that this program is running only on the localhost.

Its able to read the file from hdfs.

I have tried this in standalone mode and it works fine.

Please suggest where is it going wrong.