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https://issues.apache.org/jira/browse/BEAM-5806?focusedWorklogId=173574&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-173574
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ASF GitHub Bot logged work on BEAM-5806:
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                Author: ASF GitHub Bot
            Created on: 10/Dec/18 13:43
            Start Date: 10/Dec/18 13:43
    Worklog Time Spent: 10m 
      Work Description: robertwb commented on issue #6769: WIP: [BEAM-5806] 
Update PubsubIO to be able to change the PubsubClientFactory
URL: https://github.com/apache/beam/pull/6769#issuecomment-445819195
 
 
   @chamikaramj Could you please take a look at this PR? Thanks. 

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

            Worklog Id:     (was: 173574)
            Time Spent: 1h 40m  (was: 1.5h)
    Remaining Estimate: 22h 20m  (was: 22.5h)

> Allow to change the PubsubClientFactory when using PubsubIO
> -----------------------------------------------------------
>
>                 Key: BEAM-5806
>                 URL: https://issues.apache.org/jira/browse/BEAM-5806
>             Project: Beam
>          Issue Type: New Feature
>          Components: io-java-gcp
>            Reporter: Logan HAUSPIE
>            Assignee: Chamikara Jayalath
>            Priority: Minor
>   Original Estimate: 24h
>          Time Spent: 1h 40m
>  Remaining Estimate: 22h 20m
>
> By using the PubsubIO to read from or write to Pub/Sub we are obliged to use 
> the PubsubJsonClient to interact with the Pub/Sub API.
> This PubsubJsonClient encode the message in base 64 and increase the size of 
> this one by 30% and there is no way to change the PubsubClient used by 
> PubsubIO.
>  
> What I suggest is to allow developper to change the PubsubClientFactory by 
> specifying it at the definition-time like the following:
> {{^PubsubIO.Read<String> read = PubsubIO.readStrings()
>           .fromTopic(StaticValueProvider.of(topic))^}}
>           .withTimestampAttribute("myTimestamp")^}}
>           .withIdAttribute("myId")^}}
>           *.withClientFactory(PubsubGrpcClient.FACTORY)*;^}}
>  



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