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首页 > 解决方案 > 使用 Pyspark 读取 S3 数据，问题：NoClassDefFoundError: com/amazonaws/AmazonClientException

java - 使用 Pyspark 读取 S3 数据，问题：NoClassDefFoundError: com/amazonaws/AmazonClientException

问题描述

我在设置为使用 Pyspark 读取 s3 数据时遇到问题。我下载了 hadoop-aws.jar 和 aws-java-sdk-1.11.734.jar。它是一个单一的集群环境。

这是我在 pyspark 中输入的代码

import os
import pyspark
from pyspark.sql import SparkSession
spark = SparkSession.builder\
            .config("spark.hadoop.fs.s3a.access.key", 'xxxxx')\
            .config("spark.hadoop.fs.s3a.secret.key", 'xxxxx')\
            .config("spark.jars.packages",'/spark/jars/aws-java-sdk-1.11.734.jar:/spark/jars/hadoop-aws-2.10.0.jar') \
            .getOrCreate()
df = spark.read.format('json').load('s3a://folder/file_1.json')

以下是错误消息：

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/spark/python/pyspark/sql/readwriter.py", line 166, in load
    return self._df(self._jreader.load(path))
  File "/spark/python/lib/py4j-0.10.7-src.zip/py4j/java_gateway.py", line 1257, in __call__
  File "/spark/python/pyspark/sql/utils.py", line 63, in deco
    return f(*a, **kw)
  File "/spark/python/lib/py4j-0.10.7-src.zip/py4j/protocol.py", line 328, in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling o99.load.
: java.lang.NoClassDefFoundError: com/amazonaws/AmazonClientException
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at org.apache.hadoop.conf.Configuration.getClassByNameOrNull(Configuration.java:2134)
    at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2099)
    at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193)
    at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2654)
    at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2667)
    at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:94)
    at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2703)
    at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2685)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:373)
    at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
    at org.apache.spark.sql.execution.streaming.FileStreamSink$.hasMetadata(FileStreamSink.scala:45)
    at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:332)
    at org.apache.spark.sql.DataFrameReader.loadV1Source(DataFrameReader.scala:223)
    at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:211)
    at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:178)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
    at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
    at py4j.Gateway.invoke(Gateway.java:282)
    at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
    at py4j.commands.CallCommand.execute(CallCommand.java:79)
    at py4j.GatewayConnection.run(GatewayConnection.java:238)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: com.amazonaws.AmazonClientException
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 28 more

如何解决“java.lang.ClassNotFoundException：com.amazonaws.AmazonClientException”错误？请告诉我应该如何更改设置。非常感谢。

标签： javapythonamazon-web-servicesapache-sparkpyspark

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