请教group windows的order by问题

Commencez par la requête SQL fournie et l’exception signalée de StreamExecSort.scala, puis suivez le chemin du planificateur dans StreamExecSort.scala et TableEnvironmentImpl.java. Reproduisez la fenêtre groupée d’une seconde avec l’entrée Kafka d’exemple et déterminez si ORDER BY ROWTIME est pris en charge dans cette forme de requête. Le travail est terminé lorsque la syntaxe prise en charge ou la limitation a été établie et communiquée clairement.

需要根据1秒的window中的ROWTIME进行排序，但是报如下错误：
Exception in thread "main" org.apache.flink.table.api.TableException: Sort on a non-time-attribute field is not supported.
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSort.translateToPlanInternal(StreamExecSort.scala:118)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSort.translateToPlanInternal(StreamExecSort.scala:59)
at org.apache.flink.table.planner.plan.nodes.exec.ExecNode$class.translateToPlan(ExecNode.scala:58)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSort.translateToPlan(StreamExecSort.scala:59)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToTransformation(StreamExecSink.scala:184)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToPlanInternal(StreamExecSink.scala:91)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToPlanInternal(StreamExecSink.scala:48)
at org.apache.flink.table.planner.plan.nodes.exec.ExecNode$class.translateToPlan(ExecNode.scala:58)
at org.apache.flink.table.planner.plan.nodes.physical.stream.StreamExecSink.translateToPlan(StreamExecSink.scala:48)
at org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$translateToPlan$1.apply(StreamPlanner.scala:60)
at org.apache.flink.table.planner.delegation.StreamPlanner$$anonfun$translateToPlan$1.apply(StreamPlanner.scala:59)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.Iterator$class.foreach(Iterator.scala:891)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1334)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at org.apache.flink.table.planner.delegation.StreamPlanner.translateToPlan(StreamPlanner.scala:59)
at org.apache.flink.table.planner.delegation.PlannerBase.translate(PlannerBase.scala:153)
at org.apache.flink.table.api.internal.TableEnvironmentImpl.translate(TableEnvironmentImpl.java:682)
at org.apache.flink.table.api.internal.TableEnvironmentImpl.insertIntoInternal(TableEnvironmentImpl.java:355)
at org.apache.flink.table.api.internal.TableEnvironmentImpl.insertInto(TableEnvironmentImpl.java:334)
at com.dtstack.flink.sql.exec.FlinkSQLExec.sqlUpdate(FlinkSQLExec.java:94)
at com.dtstack.flink.sql.exec.ExecuteProcessHelper.sqlTranslation(ExecuteProcessHelper.java:235)
at com.dtstack.flink.sql.exec.ExecuteProcessHelper.getStreamExecution(ExecuteProcessHelper.java:169)
at com.dtstack.flink.sql.Main.main(Main.java:41)
at com.dtstack.flink.sql.launcher.LauncherMain.main(LauncherMain.java:140)

我的脚本如下：
CREATE TABLE MyTable(
name varchar,
after varchar,
jstime bigint,
WATERMARK FOR jstime AS withOffset(jstime,1000)
)WITH(
type ='kafka10',
bootstrapServers ='pro1:9092',
kafka.auto.offset.reset ='latest',
topic ='test1',
parallelism ='1',
sourcedatatype ='json'
);
CREATE TABLE result_user_info(
name varchar,
after varchar,
jstime bigint,
ROWTIME datetime
)WITH(
type ='console',
parallelism ='1'
);
insert into result_user_info(name,after,jstime,ROWTIME) (select name ,
after ,
jstime,ROWTIME from MyTable
group by name,after,jstime,TUMBLE(ROWTIME, INTERVAL '1' SECOND),ROWTIME order by ROWTIME)

kafka消息：
{"name":"testname","jstime":3119988231,"after":"{"khh":"我是khh0003"}"}
想请教是否是语法写错了，还是有别的排序方法，多谢