[FLINK-12392] FlinkRelMetadataQuery does not compile with Scala 2.12

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.9.0
• Fix Version/s: 1.9.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: godfrey he
• Reporter: Chesnay Schepler
• Created: 02/May/19 12:23
• Updated: 09/May/19 09:42
• Resolved: 09/May/19 09:40

Description

10:57:51.770 [ERROR] /home/travis/build/apache/flink/flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/plan/metadata/FlinkRelMetadataQuery.scala:52: error: value EMPTY in class RelMetadataQuery cannot be accessed in object org.apache.calcite.rel.metadata.RelMetadataQuery
10:57:51.770 [ERROR]  Access to protected value EMPTY not permitted because
10:57:51.770 [ERROR]  enclosing package metadata in package plan is not a subclass of
10:57:51.770 [ERROR]  class RelMetadataQuery in package metadata where target is defined
10:57:51.770 [ERROR]     this(RelMetadataQuery.THREAD_PROVIDERS.get, RelMetadataQuery.EMPTY)

Issue Links

• links to: GitHub Pull Request #8376