o83.pyWriteDynamicFrame上的ArrayIndexOutOfBoundsException

如何解决o83.pyWriteDynamicFrame上的ArrayIndexOutOfBoundsException

我尝试向Aurora（Postgres）写一列 该错误是我在代码上下文中无法理解的。

dfbetter.show()在错误发生之前立即打印出一个漂亮的policiID列表：

{"policyID": "223488"}
{"policyID": "433512"}
{"policyID": "142071"}
{"policyID": "253816"}
{"policyID": "894922"}
{"policyID": "422834"}
{"policyID": "582721"}
{"policyID": "842700"}
{"policyID": "874333"}

这是我从S3读取的脚本，可以正常工作。然后，我将CSV文件转换为只有一列的DynamicFrame，而且效果也很好。

from pyspark.context import SparkContext
from awsglue.context import GlueContext


def main():
    glueContext = GlueContext(SparkContext.getOrCreate())

    dfnew = glueContext.create_dynamic_frame_from_options("s3",{'paths': ["s3://mybucket/data/"]},format="csv",format_options={'withHeader':True})

    dfbetter = dfnew.select_fields('policyID')
    dfbetter.show()
    print(type(dfbetter))

    glueContext.write_dynamic_frame.from_options(frame=dfbetter,connection_type="postgresql",connection_options={
        "url": "theniceurl","dbtable": "postgres.thijs_test","user": "thijs","password": "mypassword"
    })


if __name__ == "__main__":
    main()

错误消息

Traceback (most recent call last):
  File "/home/glue/scripts/gluecode/hello_world.py",line 29,in <module>
    main()
  File "/home/glue/scripts/gluecode/hello_world.py",line 24,in main
    "password": "mypassword"
  File "/usr/share/aws/glue/etl/python/PyGlue.zip/awsglue/dynamicframe.py",line 640,in from_options
  File "/usr/share/aws/glue/etl/python/PyGlue.zip/awsglue/context.py",line 241,in write_dynamic_frame_from_options
  File "/usr/share/aws/glue/etl/python/PyGlue.zip/awsglue/context.py",line 264,in write_from_options
  File "/usr/share/aws/glue/etl/python/PyGlue.zip/awsglue/data_sink.py",line 35,in write
  File "/usr/share/aws/glue/etl/python/PyGlue.zip/awsglue/data_sink.py",line 31,in writeFrame
  File "/usr/lib/spark/python/lib/py4j-src.zip/py4j/java_gateway.py",line 1257,in __call__
  File "/usr/lib/spark/python/pyspark/sql/utils.py",line 63,in deco
    return f(*a,**kw)
  File "/usr/lib/spark/python/lib/py4j-src.zip/py4j/protocol.py",line 328,in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling o83.pyWriteDynamicFrame.
: java.lang.ArrayIndexOutOfBoundsException: 1
    at com.amazonaws.services.glue.util.JDBCWrapper$.apply(JDBCUtils.scala:840)
    at com.amazonaws.services.glue.util.JDBCWrapper$.apply(JDBCUtils.scala:836)
    at com.amazonaws.services.glue.sinks.PostgresDataSink.jdbcWrapper$lzycompute(PostgresDataSink.scala:25)
    at com.amazonaws.services.glue.sinks.PostgresDataSink.jdbcWrapper(PostgresDataSink.scala:25)
    at com.amazonaws.services.glue.sinks.PostgresDataSink.writeDynamicFrame(PostgresDataSink.scala:37)
    at com.amazonaws.services.glue.DataSink.pyWriteDynamicFrame(DataSink.scala:57)
    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)

解决方法

好像我弄错了connection_options。 这是正确的方法。

    glueContext.write_dynamic_frame_from_options(frame=dfpartitioned,connection_type="postgresql",connection_options={
        "url": "jdbc:postgresql://superlonghostname:5432/public","dbtable": "thijs_test","user": "myuser","password": "mypassword"
    })