pykafka topics return None

Question

from pykafka import KafkaClient

client = KafkaClient(hosts='192.168.199.87:9092') 

topics = client.topics
print(topics)

the result of topics is a dict with all values are None:

{b'user_name_topic': None, b'test_topic': None}

how to fix it?

And what's the issue? You're asking Kafka to give you the list of topics but you get a dict whose keys are the topic. Is this what troubles you? — FrankBr, Jun 19 '17 at 07:22
@FrankBr yes, it is same as [issue] (https://github.com/Parsely/pykafka/issues/670) — eagle A, Jul 31 '17 at 01:15

score 0 · Accepted Answer · answered Aug 19 '17 at 13:52

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i fix it in py3:

topic = client.topics[b'test']

client.topics don't return a available dict bescause the weak references

answered Aug 19 '17 at 13:52

eagle A

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score 0 · Answer 2 · answered Sep 14 '17 at 19:32

0

See this GitHub issue for an overview of why this happens. It's not a bug, just a strange byproduct of PyKafka's use of weak references to Topic instances.

answered Sep 14 '17 at 19:32

Emmett Butler

5,969
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pykafka topics return None

2 Answers2