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Date: Mon, 9 Jan 2017 18:13:58 +0000 (UTC)
From: "Alexey Diomin (JIRA)" <jira@apache.org>
To: commits@beam.incubator.apache.org
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Subject: [jira] [Updated] (BEAM-106) Native support for conditional
 iteration
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archived-at: Mon, 09 Jan 2017 18:14:11 -0000


     [ https://issues.apache.org/jira/browse/BEAM-106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Diomin updated BEAM-106:
-------------------------------
    Description: 
Ported from: https://github.com/GoogleCloudPlatform/DataflowJavaSDK/issues/50

There are a variety of use cases which would benefit from native support for conditional iteration.

For instance, http://stackoverflow.com/questions/31654421/conditional-iterations-in-google-cloud-dataflow/31659923?noredirect=1#comment51264604_31659923 asks about being able to write a loop like the following:

{code}
PCollection data  = ...
while(needsMoreWork(data)) {
  data = doAStep(data)
}
{code}
If there are specific use cases please let us know the details. In the future we will use this issue to post progress updates.

  was:
Ported from: https://github.com/GoogleCloudPlatform/DataflowJavaSDK/issues/50

There are a variety of use cases which would benefit from native support for conditional iteration.

For instance, http://stackoverflow.com/questions/31654421/conditional-iterations-in-google-cloud-dataflow/31659923?noredirect=1#comment51264604_31659923 asks about being able to write a loop like the following:

PCollection data  = ...
while(needsMoreWork(data)) {
  data = doAStep(data)
}
If there are specific use cases please let us know the details. In the future we will use this issue to post progress updates.


> Native support for conditional iteration
> ----------------------------------------
>
>                 Key: BEAM-106
>                 URL: https://issues.apache.org/jira/browse/BEAM-106
>             Project: Beam
>          Issue Type: New Feature
>          Components: sdk-ideas
>            Reporter: Luke Cwik
>            Assignee: James Malone
>
> Ported from: https://github.com/GoogleCloudPlatform/DataflowJavaSDK/issues/50
> There are a variety of use cases which would benefit from native support for conditional iteration.
> For instance, http://stackoverflow.com/questions/31654421/conditional-iterations-in-google-cloud-dataflow/31659923?noredirect=1#comment51264604_31659923 asks about being able to write a loop like the following:
> {code}
> PCollection data  = ...
> while(needsMoreWork(data)) {
>   data = doAStep(data)
> }
> {code}
> If there are specific use cases please let us know the details. In the future we will use this issue to post progress updates.


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