Environment variables in Pyspark - apache-spark

Question

I have installed hadoop in cluster mode and now I have installed Spark. I want to use pyspark and this is my .bashrc
# User specific aliases and functions
export HADOOP_HOME=/opt/hadoop
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:/opt/hadoop/spark/bin:/opt/hadoop/spark/sbin
export JAVA_HOME=/usr/java/jdk1.8.0_202-amd64
#Estas variables las metemos con spark
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export SPARK_DIST_CLASSPATH=$(hadoop classpath)
export SPARK_HOME=/opt/hadoop/spark
#Para pyspark
export PYTHONPATH=$SPARK_HOME/python:$SPARK_HOME/python/lib/py4j-0.10.9.3-src.zip:$PYTHONPATH
export PATH=$SPARK_HOME/python:$PATH
export PYSPARK_PYTHON=/usr/bin/python2.7
export PYSPARK_DRIVER_PYTHON=/usr/bin/python2.7
When I run the pyspark command the following happens:
[hadoop#nodo1 ~]$ pyspark
Python 2.7.5 (default, Nov 16 2020, 22:23:17)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-44)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
Traceback (most recent call last):
File "/opt/hadoop/spark/python/pyspark/shell.py", line 29, in <module>
from pyspark.context import SparkContext
File "/opt/hadoop/spark/python/pyspark/__init__.py", line 53, in <module>
from pyspark.rdd import RDD, RDDBarrier
File "/opt/hadoop/spark/python/pyspark/rdd.py", line 34, in <module>
from pyspark.java_gateway import local_connect_and_auth
File "/opt/hadoop/spark/python/pyspark/java_gateway.py", line 31, in <module>
from pyspark.find_spark_home import _find_spark_home
File "/opt/hadoop/spark/python/pyspark/find_spark_home.py", line 68
print("Could not find valid SPARK_HOME while searching {0}".format(paths), file=sys.stderr)
^
SyntaxError: invalid syntax
I am using
Hadoop 3.2.3
Spark 3.1.2
Python 2.7.5
CentOs 7
Where is the error?

Answer 1

The problem was in the Python version. Installing Python3 fixed the problem by leaving the following environment variables:
export HADOOP_HOME=/opt/hadoop
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:/opt/hadoop/spark/bin:/opt/hadoop/spark/sbin
export JAVA_HOME=/usr/java/jdk1.8.0_202-amd64
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export SPARK_DIST_CLASSPATH=$(hadoop classpath)
export SPARK_HOME=/opt/hadoop/spark