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我刚刚安装了 Faust 并运行了一个基本程序来通过 Kafka 发送和接收消息。我使用了（发布到 kafka 主题的 Faust 示例）中提到的示例代码，最初运行程序时它连接到 Kafka（它也在我的机器）。但是在尝试使用 Kafka 时断开连接，应用程序崩溃并出现以下异常

[2020-11-11 07:08:26,623] [76392] [ERROR] [^---Fetcher]: Crashed reason=ConsumerStoppedError() 
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/mode/services.py", line 779, in _execute_task
    await task
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/faust/transport/consumer.py", line 176, in _fetcher
    await self._drainer
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/faust/transport/consumer.py", line 1039, in _drain_messages
    async for tp, message in ait:
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/faust/transport/consumer.py", line 640, in getmany
    records, active_partitions = await self._wait_next_records(timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/faust/transport/consumer.py", line 676, in _wait_next_records
    records = await self._getmany(
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/faust/transport/consumer.py", line 1269, in _getmany
    return await self._thread.getmany(active_partitions, timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/faust/transport/drivers/aiokafka.py", line 805, in getmany
    return await self.call_thread(
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/mode/threads.py", line 436, in call_thread
    result = await promise
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/mode/threads.py", line 383, in _process_enqueued
    result = await maybe_async(method(*args, **kwargs))
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/mode/utils/futures.py", line 134, in maybe_async
    return await res
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/faust/transport/drivers/aiokafka.py", line 822, in _fetch_records
    raise ConsumerStoppedError()

在调试消费者断开连接的原因时，我看到在 alokafka 消费者的 fetcher.py 中，连接由于以下异常而关闭

    Unable to display children:Error resolving variables Traceback (most recent call last):
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydevd_bundle/pydevd_resolver.py", line 205, in resolve
    def resolve(self, dict, key):
KeyError: 'Exception'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydevd_bundle/pydevd_comm.py", line 1227, in do_it
    def do_it(self, dbg):
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydevd_bundle/pydevd_vars.py", line 262, in resolve_compound_variable_fields
    def resolve_compound_variable_fields(thread_id, frame_id, scope, attrs):
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydevd_bundle/pydevd_vars.py", line 169, in getVariable
    def getVariable(thread_id, frame_id, scope, attrs):
  File "/Applications/PyCharm CE.app/Contents/plugins/python-ce/helpers/pydev/_pydevd_bundle/pydevd_resolver.py", line 205, in resolve
    def resolve(self, dict, key):
AttributeError: 'dict' object has no attribute 'Exception'

软件版本如下

  • Mac 操作系统：10.15.4
  • 卡夫卡：2_12.2.1.1
  • 爱奥卡夫卡：1.1.6
  • 蟒蛇：3.9.0
  • 浮士德：1.10.4

请在这里帮忙。

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1 回答 1

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我认为您的问题与我使用 python 3.9 时的问题相同，现在我更改为 3.8 它可以工作。

于 2021-01-21T18:13:34.533 回答