[jira] [Work logged] (BEAM-9748) Add Reshuffle.ForSequentiallyGeneratedInput transform

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

     [ https://issues.apache.org/jira/browse/BEAM-9748?focusedWorklogId=431897&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-431897 ]

ASF GitHub Bot logged work on BEAM-9748:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 07/May/20 21:12
            Start Date: 07/May/20 21:12
    Worklog Time Spent: 10m 
      Work Description: lukecwik commented on pull request #11406:
URL: https://github.com/apache/beam/pull/11406#issuecomment-625500222


   retest this please


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

    Worklog Id:     (was: 431897)
    Time Spent: 3h  (was: 2h 50m)

> Add Reshuffle.ForSequentiallyGeneratedInput transform
> -----------------------------------------------------
>
>                 Key: BEAM-9748
>                 URL: https://issues.apache.org/jira/browse/BEAM-9748
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core
>            Reporter: Ismaël Mejía
>            Assignee: Ismaël Mejía
>            Priority: Minor
>          Time Spent: 3h
>  Remaining Estimate: 0h
>
> Some DoFn based IOs like JdbcIO and RedisIO rely on a different approach to Reparallelize outputs using a combination of a an empty PCollectionView to force materialization and Reshuffle.viaRandomkey to reparallelize a PCollection. This issue extracts this transform and expose it as part of the Reshuffle to avoid repeating the code for transforms (notably IOs) that produce lots of sequentially generated data where and benefit of this alternative approach to perform better reparallelization of its output.



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