Question

我安装了Spark，运行了sbt程序集，并且可以毫无问题地打开bin / pyspark。但是，我遇到了将pyspark模块加载到ipython中的问题。我收到以下错误：

In [1]: import pyspark
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-c15ae3402d12> in <module>()
----> 1 import pyspark

/usr/local/spark/python/pyspark/__init__.py in <module>()
     61
     62 from pyspark.conf import SparkConf
---> 63 from pyspark.context import SparkContext
     64 from pyspark.sql import SQLContext
     65 from pyspark.rdd import RDD

/usr/local/spark/python/pyspark/context.py in <module>()
     28 from pyspark.conf import SparkConf
     29 from pyspark.files import SparkFiles
---> 30 from pyspark.java_gateway import launch_gateway
     31 from pyspark.serializers import PickleSerializer, BatchedSerializer, UTF8Deserializer, \
     32     PairDeserializer, CompressedSerializer

/usr/local/spark/python/pyspark/java_gateway.py in <module>()
     24 from subprocess import Popen, PIPE
     25 from threading import Thread
---> 26 from py4j.java_gateway import java_import, JavaGateway, GatewayClient
     27
     28

ImportError: No module named py4j.java_gateway

Answer 1

在我的环境中（使用docker和图像sequenceiq / spark：1.1.0-ubuntu），我跑到了这里。如果你看一下pyspark shell脚本，你会发现你需要为PYTHONPATH添加一些东西：

export PYTHONPATH=$SPARK_HOME/python/:$PYTHONPATH
export PYTHONPATH=$SPARK_HOME/python/lib/py4j-0.8.2.1-src.zip:$PYTHONPATH

我在ipython中工作。

更新：如评论中所述，py4j zip文件的名称随每个Spark版本而变化，因此请寻找正确的名称。

Answer 2

我通过在.bashrc

中添加一些路径解决了这个问题

export SPARK_HOME=/home/a141890/apps/spark
export PYTHONPATH=$SPARK_HOME/python/:$PYTHONPATH
export PYTHONPATH=$SPARK_HOME/python/lib/py4j-0.8.2.1-src.zip:$PYTHONPATH

在此之后，它永远不会引发ImportError：没有名为py4j.java_gateway的模块。

Answer 3

在Pycharm，在运行上面的脚本之前，请确保已解压缩py4j * .zip文件。并在脚本中添加其引用 sys.path.append（＆＃34; spark * / python / lib＆＃34的路径;）

它对我有用。

Answer 4

#/home/shubham/spark-1.6.2
import os
import sys
# Set the path for spark installation
# this is the path where you have built spark using sbt/sbt assembly
os.environ['SPARK_HOME'] = "/home/shubham/spark-1.6.2"
# os.environ['SPARK_HOME'] = "/home/jie/d2/spark-0.9.1"
# Append to PYTHONPATH so that pyspark could be found
sys.path.append("/home/shubham/spark-1.6.2/python")
sys.path.append("/home/shubham/spark-1.6.2/python/lib")
# sys.path.append("/home/jie/d2/spark-0.9.1/python")
# Now we are ready to import Spark Modules
try:
    from pyspark import SparkContext
    from pyspark import SparkConf`enter code here`
    print "Hey nice"
except ImportError as e:
    print ("Error importing Spark Modules", e)
sys.exit(1)

Answer 5

安装pip模块＆＃39; py4j＆＃39;。

pip install py4j

我在Spark 2.1.1和Python 2.7.x中遇到了这个问题。不确定Spark是否停止在最新发行版中捆绑此软件包。但是安装py4j模块为我解决了这个问题。

为什么PySpark找不到py4j.java_gateway？

5 个答案: