[jira] [Assigned] (BEAM-2007) DataflowRunner drops Reads with no consumers

2017-04-19 Thread Daniel Halperin (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Daniel Halperin reassigned BEAM-2007:
-

Assignee: Ahmet Altay

> DataflowRunner drops Reads with no consumers
> 
>
> Key: BEAM-2007
> URL: https://issues.apache.org/jira/browse/BEAM-2007
> Project: Beam
>  Issue Type: Bug
>  Components: runner-dataflow, sdk-py
>Reporter: Daniel Halperin
>Assignee: Ahmet Altay
> Fix For: First stable release
>
>
> Basically, if a pipeline has "just" a Read with no consumers, the optimizer 
> in Dataflow will drop it. To preserve Beam semantics, we do want to run the 
> Read and drop its output, e.g., because the Read may have side effects that 
> we're testing for.
> Is it possible with pipeline surgery to find such Reads and add an Identity 
> ParDo to them?



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[jira] [Assigned] (BEAM-2007) DataflowRunner drops Reads with no consumers

2017-04-19 Thread Thomas Groh (JIRA)

 [ 
https://issues.apache.org/jira/browse/BEAM-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Thomas Groh reassigned BEAM-2007:
-

Assignee: (was: Thomas Groh)

This is fixed in the Java Dataflow runner. The Python Dataflow runner will have 
to perform a similar change.

> DataflowRunner drops Reads with no consumers
> 
>
> Key: BEAM-2007
> URL: https://issues.apache.org/jira/browse/BEAM-2007
> Project: Beam
>  Issue Type: Bug
>  Components: runner-dataflow
>Reporter: Daniel Halperin
> Fix For: First stable release
>
>
> Basically, if a pipeline has "just" a Read with no consumers, the optimizer 
> in Dataflow will drop it. To preserve Beam semantics, we do want to run the 
> Read and drop its output, e.g., because the Read may have side effects that 
> we're testing for.
> Is it possible with pipeline surgery to find such Reads and add an Identity 
> ParDo to them?



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