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Posted to issues@beam.apache.org by "Chamikara Madhusanka Jayalath (Jira)" <ji...@apache.org> on 2021/03/16 06:44:00 UTC

[jira] [Updated] (BEAM-11991) Python Kafka source not emitting messages for streaming pipelines with Flink Runner

     [ https://issues.apache.org/jira/browse/BEAM-11991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chamikara Madhusanka Jayalath updated BEAM-11991:
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    Summary: Python Kafka source not emitting messages for streaming pipelines with Flink Runner  (was: Python Kafka source not emitting messages for streaming pipelines)

> Python Kafka source not emitting messages for streaming pipelines with Flink Runner
> -----------------------------------------------------------------------------------
>
>                 Key: BEAM-11991
>                 URL: https://issues.apache.org/jira/browse/BEAM-11991
>             Project: Beam
>          Issue Type: Bug
>          Components: cross-language, runner-flink
>            Reporter: Chamikara Madhusanka Jayalath
>            Assignee: Boyuan Zhang
>            Priority: P1
>
> To reproduce:
>  * Startup a local Kafka cluster: [https://kafka.apache.org/quickstart]
>  * Setup topics:
> bin/kafka-console-consumer.sh --topic mytopic1 --from-beginning --bootstrap-server localhost:9092
> bin/kafka-console-consumer.sh --topic mytopic2 --from-beginning --bootstrap-server localhost:9092
>  * Setup a Beam virtualenv and run a pipeline that reads from Kafka. For example: [https://wtools.io/paste-code/b4je]
> > python ./pipeline.py --bootstrap_servers=localhost:9092 --in_topic=mytopic1 --out_topic=mytopic2 --runner=FlinkRunner --streaming
>  * Publish messages as kv pairs.
>  ./bin/kafka-console-producer.sh --broker-list localhost:9092 --topic mytopic1 --property "parse.key=true" --property "key.separator=:"
>  >a:b
>  >c:d
>  >e:f
>  * Messages do not get pushed to subsequent steps.
>  * Following seems to be working fine.
>      * X-lang Bounded read with Flink
>      * X-lang Kafka sink and with Flink
>   [~boyuanz] could you take a look to rule out any SDF/unbounded read related issues ?
> cc: [~mxm] and [~angoenka] for Flink issues.
>  
> Beam user thread: [https://lists.apache.org/x/thread.html/r9c74a8a7efa4b14f2f1d5f77ce8f12128cf1071861c1627f00702415@%3Cuser.beam.apache.org%3E]
>  
>  



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