godfreyhe commented on a change in pull request #11340: [Flink 14338] Upgrade
Calcite version to 1.22 for Flink SQL
URL: https://github.com/apache/flink/pull/11340#discussion_r391372858
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File path:
flink-table/flink-table-planner-blink/src/main/java/org/apache/flink/table/planner/plan/metadata/FlinkRelMetadataQuery.java
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@@ -59,37 +57,18 @@ public static FlinkRelMetadataQuery instance() {
* @param mq metadataQuery which try to reuse
* @return a FlinkRelMetadataQuery instance
*/
- public static FlinkRelMetadataQuery reuseOrCreate(RelMetadataQuery mq) {
+ public static <M extends RelMetadataQuery> FlinkRelMetadataQuery
reuseOrCreate(M mq) {
Review comment:
nit: is there any difference ?
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