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https://issues.apache.org/jira/browse/NIFI-4683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Burgess reassigned NIFI-4683:
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Assignee: Matt Burgess
> Add ability to execute Spark jobs via Livy
> ------------------------------------------
>
> Key: NIFI-4683
> URL: https://issues.apache.org/jira/browse/NIFI-4683
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Extensions
> Reporter: Matt Burgess
> Assignee: Matt Burgess
>
> Proposal for a new feature to enable NiFi users to execute Spark jobs. A
> natural entry point for this is to use Apache Livy, as it is a "REST service
> for Apache Spark". This would allow NiFi to submit Spark jobs without needing
> to bundle a Spark client itself (and maintain versions of Spark, e.g.).
> Some of the components that could be involved include:
> LivySessionController Controller Service (CS) - provides connections to
> available sessions in Livy
> * Users could request a type of connection or to retrieve the same connection
> back by session id if available.
> * Properties to configure Livy session such as number of executors, memory
> * Property for connection pool size
> * Will interact with Livy ensure that only connections that are
> idle/available are added to the pool and checked back in
> * Key for pool could be based on session id or type
> * Ensure to provide any user credentials
> * Leverages SSLContext for security
> LivyProcessor
> * Obtains Spark JARs/files via properties and/or flow file attribute(s)
> * Obtains connection information from LivySessionController
> * Provides attributes to configure session, maintain session id, attach to
> session id
> * Potential advanced UI available for testing code (probably a follow-on Jira)
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