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From "Beam JIRA Bot (Jira)" <j...@apache.org>
Subject [jira] [Updated] (BEAM-4457) Analyze FieldAccessDescriptors and drop fields that are never accessed
Date Tue, 25 Aug 2020 17:10:24 GMT

     [ https://issues.apache.org/jira/browse/BEAM-4457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Beam JIRA Bot updated BEAM-4457:
--------------------------------
    Labels:   (was: stale-P2)

> Analyze FieldAccessDescriptors and drop fields that are never accessed
> ----------------------------------------------------------------------
>
>                 Key: BEAM-4457
>                 URL: https://issues.apache.org/jira/browse/BEAM-4457
>             Project: Beam
>          Issue Type: Sub-task
>          Components: io-java-gcp
>            Reporter: Reuven Lax
>            Priority: P3
>
> We can walk backwards through the graph, analyzing which fields are accessed. When we
find paths where many fields are never accessed, we can insert a projection transform to
drop those fields preemptively. This can save a lot of resources in the case where many fields
in the input are never accessed.
> To do this, the FieldAccessDescriptor information must be added to the portability protos. 



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