[jira] [Work logged] (BEAM-2915) Java SDK support for portable user state

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

     [ https://issues.apache.org/jira/browse/BEAM-2915?focusedWorklogId=107980&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-107980 ]

ASF GitHub Bot logged work on BEAM-2915:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 01/Jun/18 04:54
            Start Date: 01/Jun/18 04:54
    Worklog Time Spent: 10m 
      Work Description: tweise commented on a change in pull request #5445: [BEAM-2915] Add support for handling bag user state to the java-fn-execution library to support runner integration.
URL: https://github.com/apache/beam/pull/5445#discussion_r192297971
 
 

 ##########
 File path: runners/core-construction-java/src/main/java/org/apache/beam/runners/core/construction/graph/GreedyPCollectionFusers.java
 ##########
 @@ -181,6 +181,10 @@ private static boolean parDoCompatibility(
     // side inputs can be fused with other transforms in the same environment which are not
     // upstream of any of the side inputs.
     return pipeline.getSideInputs(parDo).isEmpty()
+        // Since we lack the ability to mark upstream transforms as key preserving, we
+        // purposefully break fusion here to provide runners the opportunity to insert a
+        // grouping operation
+        && pipeline.getUserStates(parDo).isEmpty()
 
 Review comment:
   Based on what information would a runner insert a shuffle though? Unless that is available, there is also no benefit breaking the chain here?
   

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

    Worklog Id:     (was: 107980)
    Time Spent: 0.5h  (was: 20m)

> Java SDK support for portable user state
> ----------------------------------------
>
>                 Key: BEAM-2915
>                 URL: https://issues.apache.org/jira/browse/BEAM-2915
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-java-core
>            Reporter: Henning Rohde
>            Assignee: Luke Cwik
>            Priority: Minor
>              Labels: portability
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>




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