in core/src/main/java/org/apache/rocketmq/streams/core/window/fire/IdleWindowScaner.java [125:135]
public void removeOldAccumulatorSession(WindowKey oldWindowKey) {
if (oldWindowKey == null) {
return;
}
TimeType timeType = this.lastUpdateTime2WindowKey.get(oldWindowKey);
if (timeType != null && timeType.getType() == Type.AccumulatorSessionWindow) {
this.lastUpdateTime2WindowKey.remove(oldWindowKey);
}
this.fireSessionWindowCallback.remove(oldWindowKey);
}