python - 错误 : Unable to find py4j, 您的 SPARK_HOME 可能未正确配置

Question

我无法在 Jupyter 笔记本中的导入下运行。

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

收到以下错误:

    ---------------------------------------------------------------------------
~/.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

我有 py4j 安装并尝试将以下这些行添加到 ~/.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

Answer 1

检查您安装的 spark 版本是否与您在 SPARK_HOME 名称下声明的相同
例如(在 Google Colab 中)，我安装了:

!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"

看那个 spark-3.0.1-bin-hadoop3.2 两个地方必须相同