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https://issues.apache.org/jira/browse/BEAM-14438?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ifat Afek updated BEAM-14438:
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Attachment: FlinkStringProcessingServiceExample.java
> Beam slowness compared to flink-native
> --------------------------------------
>
> Key: BEAM-14438
> URL: https://issues.apache.org/jira/browse/BEAM-14438
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.38.0
> Reporter: Ifat Afek
> Priority: P2
> Attachments: BeamConvertToStringRecordExample.java,
> BeamPipelineStringToStringFullExample.java,
> FlinkStringProcessingServiceExample.java
>
>
> I tried to compare a very simple beam pipeline with an equivalent
> flink-native pipeline. Both pipelines read strings from one kafka topic and
> write them to another topic. I ran each pipeline separately on a single task
> manager with a single slot and parallelism 1.
> Flink native runs 5 times faster than beam: 150,000 strings per second in
> flink comparing to 30,000 in beam.
> When using Avro and schema registry the difference is even more significant -
> flink native runs 30-80 times faster than beam.
> Attached is the java code of both string-to-string pipelines.
>
>
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