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https://issues.apache.org/jira/browse/SPARK-30369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Max Thompson updated SPARK-30369:
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Attachment: pruned.png
> Prune uncomputed children of InMemoryRelation
> ---------------------------------------------
>
> Key: SPARK-30369
> URL: https://issues.apache.org/jira/browse/SPARK-30369
> Project: Spark
> Issue Type: Improvement
> Components: SQL, Web UI
> Affects Versions: 3.0.0
> Reporter: Max Thompson
> Priority: Minor
> Attachments: pruned.png, unpruned.png
>
>
> This is a follow-up JIRA for: [De-duplicate InMemoryTableScan cached plans in
> SQL UI JIRA URL]
>
> Currently with the changes introduced by the JIRAs this follows up on, if a
> query persists data that is later read by another query, the uncomputed
> subtree of the plan for the persisted data will be shown:
> !bLgZ04NuAvvtXpD8SABA
> xBkAgChDnAEAiDLEGQCAKEOcAQCIMsQZAIAoQ5wBAIgyxBkAgChDnAEAiDLEGQCAKEOcAQCIMsQZAIAoQ5wBAIgyxBkAgChDnAEAiDLEGQCAKEOcAQCIMv8P7NCckWtEmyMAAAAASUVORK5CYII=!
>
> To avoid showing uncomputed subtrees in the query plan (which may become
> appreciably large in a situation such as if multiple iterative queries are
> run that each use persisted data from the last query), the uncomputed
> subtrees could be removed before rendering the query plan:
> !dGo9o
> CEEIYSEIIIcQcDCQhhBBiBgaSEEIIMQMDSQghhJiBgSSEEELMwEASQgghZmAgCSGEEDMwkIQQQogZGEhCCCHEDAwkIYQQYgYGkhBCCDEDA0kIIYSYgYEkhBBCzMBAEkIIIWZgIAkhhBAzMJCEEEKIGRhIQgghxAwMJCGEEGIGBpIQQggxAwNJCCGEmIGBJIQQQszAQBJCCCFm
> P8Bum1cUi kSH0AAAAASUVORK5CYII=!
>
>
> A configuration property should be added that enables this feature when set
> to true. If a user wants to see the uncomputed subtrees, they can simply
> disable the configuration property.
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