[jira] [Work logged] (BEAM-6652) Handle map encoding better.

Mon, 11 Feb 2019 14:19:32 -0800 


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https://issues.apache.org/jira/browse/BEAM-6652?focusedWorklogId=197199&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-197199
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ASF GitHub Bot logged work on BEAM-6652:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 11/Feb/19 22:12
            Start Date: 11/Feb/19 22:12
    Worklog Time Spent: 10m 
      Work Description: lostluck commented on pull request #7814: [BEAM-6652] 
Restrict map usage.
URL: https://github.com/apache/beam/pull/7814
 
 
   Maps make terrible keys, since they aren't currently guaranteed to be coded 
in the same order for the same set of values by the default encoder. Until the 
default coder handles maps consistently (that is, maps with the same key,value 
pair are hashed equivalently for lifting and shuffling), their use should be 
restricted to ensure beam computes correctly.
   
   ------------------------
   
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   Post-Commit Tests Status (on master branch)
   
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Issue Time Tracking
-------------------

            Worklog Id:     (was: 197199)
            Time Spent: 10m
    Remaining Estimate: 0h

> Handle map encoding better.
> ---------------------------
>
>                 Key: BEAM-6652
>                 URL: https://issues.apache.org/jira/browse/BEAM-6652
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-go
>            Reporter: Robert Burke
>            Priority: Minor
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Maps are a dangerous type to have as part of key values, and the Go SDK 
> currently doesn't handle them very well. Until we have a default coder that 
> assures that map encodings are canonical, it's better that we restrict their 
> usage within the SDK.



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