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https://issues.apache.org/jira/browse/IMPALA-13533?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-13533 started by Michael Smith.
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> Execute single-node CTE plans
> -----------------------------
>
> Key: IMPALA-13533
> URL: https://issues.apache.org/jira/browse/IMPALA-13533
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend
> Reporter: Michael Smith
> Assignee: Michael Smith
> Priority: Major
>
> Add backend support for CTE plans.
> * Add PlanNode/ExecNode for CTE producer, consumer, and sequence nodes.
> * Implement backend node-local dataflow from CTE producers to consumers. Use
> BufferedTupleStream to buffer CTE producer results until each consumer is
> ready to process them; initially this will be a batch operation, where CTE
> producer puts all results into the BufferedTupleStream, then consumers can
> start reading them.
> * Should be able to execute all TPC-DS queries.
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