leonardBang commented on a change in pull request #9433: [FLINK-13708]
[table-planner-blink] transformations should be cleared after execution in
blink planner
URL: https://github.com/apache/flink/pull/9433#discussion_r338030981
##########
File path:
flink-table/flink-table-api-java-bridge/src/main/java/org/apache/flink/table/api/java/internal/StreamTableEnvironmentImpl.java
##########
@@ -335,6 +335,12 @@ protected boolean isEagerOperationTranslation() {
return true;
}
+ @Override
+ public String explain(boolean extended) {
+ // throw exception directly, because the operations to explain
are always empty
+ throw new TableException("'explain' method without any tables
is unsupported in StreamTableEnvironment.");
Review comment:
Keep same note with StreamTableEnvironmentImpl.scala would be better.
```suggestion
throw new TableException("'explain' method is unsupported in
StreamTableEnvironment.")
```
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