[CALCITE-2751] MetadataCycleException not handled in VolcanoRelMetadataProvider

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: core
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Steven Phillips
• Created: 21/Dec/18 19:49
• Updated: 27/Feb/19 19:49

Description

If the RelSubset has no best RelNode, we iterate through all of the RelNodes until we find one that has appropriate Metadata. But if the RelNode we choose has already been visited, the CyclicMetadataException is thrown, but not caught. We should catch the exception and try again on another RelNode.

Issue Links

• links to: Pull request