[jira] [Work logged] (BEAM-10670) Make non-portable Splittable DoFn the only option when executing Java "Read" transforms

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-10670?focusedWorklogId=593392&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-593392 ]

ASF GitHub Bot logged work on BEAM-10670:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 07/May/21 16:10
            Start Date: 07/May/21 16:10
    Worklog Time Spent: 10m 
      Work Description: iemejia opened a new pull request #14755:
URL: https://github.com/apache/beam/pull/14755


   We have had many reports of performance degradation since the switch to the SDF by default read translation, and our own tests found between 20-25% performance degradation that we cannot justify. This PR is basically 'a revert' of #13021
   
   It introduces the new `use_sdf_read` so we can still have a path to test the performance of the SDF path so we can be able to judge when to make it the default again.
   
   R: @kennknowles 
   CC: @boyuanzz @lukecwik @ibzib (for awareness)


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 593392)
    Time Spent: 38h  (was: 37h 50m)

> Make non-portable Splittable DoFn the only option when executing Java "Read" transforms
> ---------------------------------------------------------------------------------------
>
>                 Key: BEAM-10670
>                 URL: https://issues.apache.org/jira/browse/BEAM-10670
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core
>            Reporter: Luke Cwik
>            Assignee: Ismaël Mejía
>            Priority: P1
>              Labels: Clarified
>             Fix For: 2.30.0
>
>          Time Spent: 38h
>  Remaining Estimate: 0h
>
> All runners seem to be capable of migrating to splittable DoFn for non-portable execution except for Dataflow runner v1 which will internalize the current primitive read implementation that is shared across runner implementations.



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