在使用翻滚窗口的apache flink应用程序中遇到问题。窗口大小是10秒，我希望每10秒有一个resultset数据流。但是，当最新窗口的结果集总是延迟时，除非我将进一步的数据推送到源流。
例如，如果我在“01:33:40.0”和“01:34:00.0”之间将多个记录推送到源流，然后停止查看日志，则不会发生任何事情。
我在“01:37:xx”上再次推送一些数据，然后将获得“01:33:40.0”和“01:34:00.0”之间窗口的结果集，这是不期望的，因为下游接收器逻辑期望结果集准时出现。
任何提示，以改善这将是非常感谢。谢谢。
日志如下：

"log timestamp": "2019-11-15 01:37:45",
"message": "resultSet output: CLASS: 13 CNT: 1 from: 2019-11-15 01:33:40.0 to: 2019-11-15 01:34:00.0\n",

下面是代码段：

Table resultTable = tableEnv.sqlQuery(""+
    "SELECT " +
    "  CAST (N02_001 AS VARCHAR(10)) AS RAILWAY_CLASS, " +
    "  COUNT(*) RAILWAY_CLASS_COUNT, " +
    "  TUMBLE_START(rowtime, INTERVAL '20' SECOND) as WINDOW_START, " +
    "  TUMBLE_END(rowtime, INTERVAL '20' SECOND) as WINDOW_END " +
    " FROM Inputs " +
    " GROUP BY TUMBLE(rowtime, INTERVAL '20' SECOND), CAST (N02_001 AS VARCHAR(10))");

TupleTypeInfo<Tuple4<String, Long, Timestamp, Timestamp>> tupleType = new TupleTypeInfo<>(
    Types.STRING,
    Types.LONG,
    Types.SQL_TIMESTAMP,
    Types.SQL_TIMESTAMP);

DataStream<Tuple4<String, Long, Timestamp, Timestamp>> resultSet = tableEnv.toAppendStream(resultTable, tupleType);

resultSet
.map((Tuple4<String, Long, Timestamp, Timestamp> value) -> {
    String output = "CLASS: " + value.f0 + " CNT: " + value.f1 + " from: " + value.f2 + " to: " + value.f3 + "\n";
    log.warn("resultSet output: " + output);
    return value;
})
.returns(Types.TUPLE(Types.STRING, Types.LONG, Types.SQL_TIMESTAMP, Types.SQL_TIMESTAMP));