wuchong commented on a change in pull request #8901:
[FLINK-13003][table-planner-blink] Support Temporal TableFunction Join in blink
planner
URL: https://github.com/apache/flink/pull/8901#discussion_r298454608
##########
File path:
flink-table/flink-table-runtime-blink/src/main/java/org/apache/flink/table/runtime/join/stream/AbstractStreamingJoinOperator.java
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@@ -117,7 +117,9 @@ public void open() throws Exception {
@Override
public void close() throws Exception {
super.close();
- joinCondition.backingJoinCondition.close();
+ if (joinCondition != null) {
Review comment:
I think we should protect it in each close() method. The compiled instance
may not be instantiated when close() is invoked (an exception happens before
instantiation).
This change is not related to this pull request.
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