错误:无法找到 py4j，您的 SPARK_HOME 可能没有正确配置 [英] ERROR: Unable to find py4j, your SPARK_HOME may not be configured correctly

问题描述

我无法在 Jupyter 笔记本中运行以下导入.

I'm unable to run below import in Jupyter notebook.

findspark.init('home/ubuntu/spark-3.0.0-bin-hadoop3.2')

出现以下错误:

    ---------------------------------------------------------------------------
~/.local/lib/python3.6/site-packages/findspark.py in init(spark_home, python_path, edit_rc, edit_profile)
    144     except IndexError:
    145         raise Exception(
--> 146             "Unable to find py4j, your SPARK_HOME may not be configured correctly"
    147         )
    148     sys.path[:0] = [spark_python, py4j]

Exception: Unable to find py4j, your SPARK_HOME may not be configured correctly

我确实安装了 py4j 并且还尝试将以下几行添加到 ~/.bashrc

I do have py4j installed and also tried to add these below lines into ~/.bashrc

export SPARK_HOME=/home/ubuntu/spark-3.0.0-bin-hadoop3.2
export PYTHONPATH=$SPARK_HOME/python/:$PYTHONPATH
export PYTHONPATH=$SPARK_HOME/python/lib/py4j-0.10.9-src.zip:$PYTHONPATH

推荐答案

检查你安装的spark版本是否和你在SPARK_HOME名下声明的一样

Check if the spark version you installed is the same that you declare under SPARK_HOME name

例如(在 Google Colab 中)，我已经安装:

For example (in Google Colab), I've installed:

!wget -q https://downloads.apache.org/spark/spark-3.0.1/spark-3.0.1-bin-hadoop3.2.tgz

然后我声明:

os.environ["SPARK_HOME"] = "/content/spark-3.0.1-bin-hadoop3.2"

看看 spark-3.0.1-bin-hadoop3.2 在两个地方必须相同

Look that spark-3.0.1-bin-hadoop3.2 must be same in both places

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