[jira] [Commented] (SOLR-8487) Add CommitStream to Streaming API and Streaming Expressions

["Dennis Gove (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-8487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15435610#comment-15435610 ] 

Dennis Gove commented on SOLR-8487:
-----------------------------------

I'm working on this. Hoping to have a first draft in a day or two.

> 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: 6.0
>            Reporter: Jason Gerlowski
>            Priority: Minor
>             Fix For: 6.0
>
>
> (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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