执行pyspark报错env: ‘python’: No such file or directory问题

前提条件:
Ubuntu18.04环境

安装好Spark2.x,并配置好环境变量

安装好python3

问题:
执行pyspark脚本报错

$ pyspark
 
pyspark: line 45: python: command not found
 
env: ‘python’: No such file or directory

原因:
因为没有配置Spark python的环境变量

解决办法:
添加python相关环境变量

$ vi ~/.bashrc
文件末尾添加如下语句

export PYTHONPATH=$SPARK_HOME/python:$SPARK_HOME/python/lib/py4j-0.10.7-src.zip:$PYTHONPATH
export PYSPARK_PYTHON=python3

注意:py4j-0.10.7-src.zip要到$SPARK_HOME/python/lib目录查看是否是这个名称。不同版本的py4j的名称会有差别

保存后,让环境变量生效

$ source ~/.bashrc

再次输入pyspark,成功如下:

$ pyspark
/home/hadoop/soft/spark/bin/pyspark: line 45: python: command not found
Python 3.5.2 (default, Nov 12 2018, 13:43:14)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
19/01/23 00:27:46 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
Welcome to
      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /__ / .__/\_,_/_/ /_/\_\   version 2.3.2
      /_/
 
Using Python version 3.5.2 (default, Nov 12 2018 13:43:14)
SparkSession available as 'spark'.

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