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https://issues.apache.org/jira/browse/SOLR-9559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein updated SOLR-9559:
---------------------------------
    Description: 
The ExecutorStream will wrap a stream which contains Tuples with Streaming 
Expressions to execute. By default the ExecutorStream will look for the 
expression in the *expr* field in the Tuples.

The ExecutorStream will have an internal thread pool so expressions can be 
executed in parallel in a single worker. The ExecutorStream can also be wrapped 
by the parallel function to partition the Streaming Expressions that need to be 
executed across a cluster of worker nodes.

Sample syntax:
*code*
executor(topic(storedExpressions, fl="expr", ...))
*code*

  was:
The ExecutorStream will execute the stored topics and macros from SOLR-9387.

The ExecutorStream can be pointed at a SolrCloud collection where the topics 
are stored and it will execute the topics and macros in batches.

The ExecutorStream will support parallel execution of topics/macros as well. 
This will allow the workload to be spread across a cluster of worker nodes.


> Add ExecutorStream to execute a stream of Expressions
> -----------------------------------------------------
>
>                 Key: SOLR-9559
>                 URL: https://issues.apache.org/jira/browse/SOLR-9559
>             Project: Solr
>          Issue Type: New Feature
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Joel Bernstein
>            Assignee: Joel Bernstein
>
> The ExecutorStream will wrap a stream which contains Tuples with Streaming 
> Expressions to execute. By default the ExecutorStream will look for the 
> expression in the *expr* field in the Tuples.
> The ExecutorStream will have an internal thread pool so expressions can be 
> executed in parallel in a single worker. The ExecutorStream can also be 
> wrapped by the parallel function to partition the Streaming Expressions that 
> need to be executed across a cluster of worker nodes.
> Sample syntax:
> *code*
> executor(topic(storedExpressions, fl="expr", ...))
> *code*



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