Question

我读了一些有关导入pyspark时出现的错误的帖子，有人向install py4j提出了建议，并且我已经做到了，但是仍然看到错误。

I am using a conda environment, here is the steps:
1. create a yml file and include the needed packages (including the py4j)
2. create a env based on the yml
3. create a kernel pointing to the env
4. start the kernel in Jupyter
5. running `import pyspark` throws error: ImportError: No module named py4j.protocol

Answer 1

通过在kernel.json中添加环境部分并明确指定以下变量来解决该问题：

 "env": {
  "HADOOP_CONF_DIR": "/etc/spark2/conf/yarn-conf",
  "PYSPARK_PYTHON":"/opt/cloudera/parcels/Anaconda/bin/python",
  "SPARK_HOME": "/opt/cloudera/parcels/SPARK2",
  "PYTHONPATH": "/opt/cloudera/parcels/SPARK2/lib/spark2/python/lib/py4j-0.10.7-src.zip:/opt/cloudera/parcels/SPARK2/lib/spark2/python/",
  "PYTHONSTARTUP": "/opt/cloudera/parcels/SPARK2/lib/spark2/python/pyspark/shell.py",
  "PYSPARK_SUBMIT_ARGS": " --master yarn --deploy-mode client pyspark-shell"
 }

Jupyter ImportError：尽管安装了py4j，但没有名为py4j.protocol的模块

1 个答案: