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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Work logged] (BEAM-5519) Spark Streaming Duplicated Encoding/Decoding Effort
Date Thu, 27 Sep 2018 21:08:00 GMT


ASF GitHub Bot logged work on BEAM-5519:

                Author: ASF GitHub Bot
            Created on: 27/Sep/18 21:07
            Start Date: 27/Sep/18 21:07
    Worklog Time Spent: 10m 
      Work Description: kyle-winkelman commented on issue #6511: [BEAM-5519] Remove call to
groupByKey in Spark Streaming.
   I am not extremely confident in this code I just wanted to put something together to demonstrate
my point. I also think there is some additional refactoring required such as renaming SparkGroupAlsoByWindowViaWindowSet.groupAlsoByWindow,
but I would like to get some feedback before continuing.

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Issue Time Tracking

    Worklog Id:     (was: 148908)
    Time Spent: 20m  (was: 10m)

> Spark Streaming Duplicated Encoding/Decoding Effort
> ---------------------------------------------------
>                 Key: BEAM-5519
>                 URL:
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-spark
>            Reporter: Kyle Winkelman
>            Assignee: Kyle Winkelman
>            Priority: Major
>              Labels: spark, spark-streaming
>          Time Spent: 20m
>  Remaining Estimate: 0h
> When using the SparkRunner in streaming mode. There is a call to groupByKey followed
by a call to updateStateByKey. BEAM-1815 fixed an issue where this used to cause 2 shuffles
but it still causes 2 encode/decode cycles.

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