我正在尝试使用toDF
和fromDF
函数(https://docs.aws.amazon.com/glue/latest/dg/aws-glue-api-crawler-pyspark-extensions-dynamic-frame.html#aws-glue-api-crawler-pyspark-extensions-dynamic-frame-fromDF(将数据帧转换为动态帧,如下代码片段所示:
import sys
from awsglue.transforms import *
from awsglue.utils import getResolvedOptions
from pyspark.context import SparkContext
from awsglue.context import GlueContext
from awsglue.job import Job
## @params: [JOB_NAME]
args = getResolvedOptions(sys.argv, ['JOB_NAME'])
sc = SparkContext()
glueContext = GlueContext(sc)
spark = glueContext.spark_session
job = Job(glueContext)
job.init(args['JOB_NAME'], args)
## @type: DataSource
## @args: [database = "test-3", table_name = "test", transformation_ctx = "datasource0"]
## @return: datasource0
## @inputs: []
datasource0 = glueContext.create_dynamic_frame.from_catalog(database = "test-3", table_name = "test", transformation_ctx = "datasource0")
foo = datasource0.toDF()
bar = DynamicFrame.fromDF(foo, glueContext, "bar")
但是,我在线上收到一个错误:
bar = DynamicFrame.fromDF(foo, glueContext, "bar")
错误说:
NameError: name 'DynamicFrame' is not defined
我已经尝试了通常的谷歌搜索无济于事,我无法从其他示例中看到我做错了什么。有谁知道为什么我会收到此错误以及如何解决它?
from awsglue.dynamicframe import DynamicFrame
导入动态帧
您需要从模块导入DynamicFrame
类awsglue.dynamicframe
:
from awsglue.dynamicframe import DynamicFrame
AWS Glue ETL 文档提供的示例中缺少很多内容。
但是,您可以参考以下 GitHub 存储库,其中包含许多使用 Glue ETL 执行基本任务的示例:
AWS Glue 示例