What is Spark Job ?

Question

I have already done with spark installation and executed few testcases setting master and worker nodes. That said, I have a very fat confusion of what exactly a job is meant in

Answer 1

Hey here's something I did before, hope it works for you:

#!/bin/bash
# Hadoop and Server Variables
HADOOP="hadoop fs"
HDFS_HOME="hdfs://ha-edge-group/user/max"
LOCAL_HOME="/home/max"

# Cluster Variables
DRIVER_MEM="10G"
EXECUTOR_MEM="10G"
CORES="5"
EXECUTORS="15"

# Script Arguments
SCRIPT="availability_report.py" # Arg[0]
APPNAME="Availability Report" # arg[1]

DAY=`date -d yesterday +%Y%m%d`

for HOUR in 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
do
        #local directory to getmerge to
        LOCAL_OUTFILE="$LOCAL_HOME/availability_report/data/$DAY/$HOUR.txt"

        # Script arguments
        HDFS_SOURCE="webhdfs://1.2.3.4:0000/data/lbs_ndc/raw_$DAY'_'$HOUR" # arg[2]
        HDFS_CELLS="webhdfs://1.2.3.4:0000/data/cells/CELLID_$DAY.txt" # arg[3]
        HDFS_OUT_DIR="$HDFS_HOME/availability/$DAY/$HOUR" # arg[4]

        spark-submit \
        --master yarn-cluster \
        --driver-memory $DRIVER_MEM \
        --executor-memory $EXECUTOR_MEM \
        --executor-cores $CORES \
        --num-executors $EXECUTORS \
        --conf spark.scheduler.mode=FAIR \
        $SCRIPT $APPNAME $HDFS_SOURCE $HDFS_CELLS $HDFS_OUT_DIR

        $HADOOP -getmerge $HDFS_OUT_DIR $LOCAL_OUTFILE
done