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https://issues.apache.org/jira/browse/SOLR-8487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dennis Gove closed SOLR-8487.
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    Resolution: Fixed

> Add CommitStream to Streaming API and Streaming Expressions
> -----------------------------------------------------------
>
>                 Key: SOLR-8487
>                 URL: https://issues.apache.org/jira/browse/SOLR-8487
>             Project: Solr
>          Issue Type: New Feature
>    Affects Versions: 6.3
>            Reporter: Jason Gerlowski
>            Assignee: Dennis Gove
>            Priority: Minor
>             Fix For: 6.3
>
>         Attachments: SOLR-8487.patch, SOLR-8487.patch
>
>
> (Paraphrased from Joel's idea/suggestions in the comments of SOLR-7535).
> With SOLR-7535, users can now index documents/tuples using an UpdateStream.  
> However, there's no way currently using the Streaming API to force a commit 
> on the collection that received these updates.
> The purpose of this ticket is to add a CommitStream, which can be used to 
> trigger commit(s) on a given collection.
> The proposed usage/behavior would look a little bit like:
> {{commit(collection, parallel(update(search()))}}
> Note that...
> 1.) CommitStream has a positional collection parameter, to indicate which 
> collection to commit on. (Alternatively, it could recurse through 
> {{children()}} nodes until it finds the UpdateStream, and then retrieve the 
> collection from the UpdateStream).
> 2.) CommitStream forwards all tuples received by an underlying, wrapped 
> stream.
> 3.) CommitStream commits when the underlying stream emits its EOF tuple. 
> (Alternatively, it could commit every X tuples, based on a parameter).



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