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Posted to commits@samza.apache.org by "Lakshmi Manasa Gaduputi (Jira)" <ji...@apache.org> on 2021/09/15 23:14:00 UTC

[jira] [Created] (SAMZA-2688) Elasticity: introduce configs and sub-partition concept

Lakshmi Manasa Gaduputi created SAMZA-2688:
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             Summary: Elasticity: introduce configs and sub-partition concept
                 Key: SAMZA-2688
                 URL: https://issues.apache.org/jira/browse/SAMZA-2688
             Project: Samza
          Issue Type: Sub-task
            Reporter: Lakshmi Manasa Gaduputi
            Assignee: Lakshmi Manasa Gaduputi


Introduce config: task.elasticity.factor which defaults to 1. If elasticity factor = 1 then each task consumes the whole input SSP. If elasticity factor = X, then each task is split into X virtual tasks and each virtual task consumes 1/X th of the input SSP. Each of the 1/X th of the input SSP is referred to as the sub-SSP.

Additionally, introduce sub-SSP concept as SystemStreamParitionKeyHash where each SSP has X KeyHashes.



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