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Posted to issues@beam.apache.org by "Radosław Stankiewicz (Jira)" <ji...@apache.org> on 2022/01/12 14:54:00 UTC

[jira] [Assigned] (BEAM-9188) Improving speed of splitting for Custom Sources

     [ https://issues.apache.org/jira/browse/BEAM-9188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Radosław Stankiewicz reassigned BEAM-9188:
------------------------------------------

    Assignee: Radosław Stankiewicz

> Improving speed of splitting for Custom Sources
> -----------------------------------------------
>
>                 Key: BEAM-9188
>                 URL: https://issues.apache.org/jira/browse/BEAM-9188
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-dataflow
>            Reporter: Radosław Stankiewicz
>            Assignee: Radosław Stankiewicz
>            Priority: P3
>          Time Spent: 4h 40m
>  Remaining Estimate: 0h
>
> At this moment Custom Source in being split and serialized in sequence. If there are many splits, it takes time to process all splits. 
>  
> Example: it takes 2s to calculate size and serialize CassandraSource due to connection setup and teardown. With 100+ splits, it's a lot of time spent in 1 worker. 



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