What's the meaning of if [ -z "$SPARK_HOME" ]; then

Asked Oct 17 '18 at 18:20

Active Oct 17 '18 at 18:20

Viewed 47 times

Full script:

if [ -z "$SPARK_HOME" ]; then
  echo "SPARK_HOME must be set to the location of a Spark distribution!"
  exit 1
fi

My guess is if there is no setting for "$SPARK_HOME" then do the following, however I double checked with echo $SPARK_HOME and do see value set in it.

$echo $SPARK_HOME
/opt/cloudera/parcels/SPARK2/lib/spark2

Currently a script errors out here saying

SPARK_HOME must be set to the location of a Spark distribution!

How can I fix it? Thank you.

asked Oct 17 '18 at 18:20

mdivk

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alright, thank you. – mdivk Oct 17 '18 at 18:32
Make sure the variable is exported and that you're running the script from the same shell, otherwise it may not be set in the script – that other guy Oct 17 '18 at 18:34

What's the meaning of if [ -z "$SPARK_HOME" ]; then

0 Answers0