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Flink SQL 1.10.0窗口计算结果无法sink怎么办?

各位大神求帮忙看一下。

Flink 版本:1.10.0 Planner:blink

我在使用Flink SQL的时候遇到了一个问题,能否帮忙看一下,我尝试在寻找了解决方法,但是没有起作用。 比如我发现类似的问题 https://www.mail-archive.com/user-zh@flink.apache.org/msg03916.html 中描述的问题,根据这个mail中的解决方法我设置了timezone,但是问题没有被解决。

Flink Table Env配置 StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); * env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);* * env.setParallelism(1);* *EnvironmentSettings envSetting = EnvironmentSettings.newInstance().useBlinkPlanner().inStreamingMode().build(); * StreamTableEnvironment tableEnv = StreamTableEnvironment.create(env, envSetting); *tableEnv.getConfig().setLocalTimeZone(ZoneId.of("Asia/Shanghai")); *

我这个job应用中定义了两个table,分别为source table “sqlDdlAnaTable”

String sqlDdlAnaTable = "CREATE TABLE ana_Source(type INT, datatime BIGINT, list ARRAY <ROW(id STRING, v FLOAT, q INTEGER)>, ts AS TO_TIMESTAMP(FROM_UNIXTIME(datatime)), WATERMARK FOR ts AS ts - INTERVAL '5' SECOND)" + * " WITH (" +* * "'connector.type' = 'pravega'," +* * "'connector.version' = '1'," +* * "'connector.connection-config.controller-uri'= 'tcp://192.168.188.130:9090 http://192.168.188.130:9090'," +* * "'connector.connection-config.default-scope' = 'Demo'," +* * "'connector.reader.stream-info.0.stream' = 'test'," +* * "'format.type' = 'json'," +* * "'format.fail-on-missing-field' = 'false', " +* * "'update-mode' = 'append')";*

和sink table " sqlDdlSinkTable ".

  • String sqlDdlSinkTable = "CREATE TABLE tb_sink" +*
  • "(id STRING, " +*
  • "wStart TIMESTAMP(3) , " +*
  • "v FLOAT)" +*
  • " WITH (" +*
  • "'connector.type' = 'pravega'," +*
  • "'connector.version' = '1'," +*
  • "'connector.connection-config.controller-uri'= 'tcp://192.168.188.130:9090 http://192.168.188.130:9090'," +*
  • "'connector.connection-config.default-scope' = 'Demo'," +*
  • "'connector.writer.stream' = 'result'," +*
  • "'connector.writer.routingkey-field-name' = 'id'," +*
  • "'connector.writer.mode' = 'atleast_once'," +*
  • "'format.type' = 'json'," +*
  • "'update-mode' = 'append')";*

在数据处理逻辑比较简单,计算10s tumble window的vaule的平均。 我一开始直接打印结果能够明确看到10s中输出一次计算结果,watermark也正常移动。 String sqlAna = "SELECT ts, id, v " + * "FROM tb_JsonRecord " +* * "WHERE q=1 AND type=1";* * Table tableAnaRecord = tableEnv.sqlQuery(sqlAna);* * tableEnv.registerTable("tb_AnaRecord", tableAnaRecord);*

tableEnv.toAppendStream(tableAnaRecord, Row.class).print()

但是我尝试将结果insert到sink table中发现,就没有任何结果被写入。 String sqlAnaAvg = "INSERT INTO tb_sink(id, wStart, v) " + * "SELECT id, " +* * "TUMBLE_START(ts, INTERVAL '10' SECOND) as wStart, " +* * "AVG(v) FROM tb_AnaRecord " +* * "GROUP BY TUMBLE(ts, INTERVAL '10' SECOND), id"; * * tableEnv.sqlUpdate(sqlAnaAvg);*

提前感谢!

*来自志愿者整理的flink邮件归档

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游客nnqbtnagn7h6s 2021-12-06 19:53:11 543 0
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  • pravega connector[1] 应该不是社区提供的,之前没看过这个connector的代码, 看你的描述,可以检查下写入时是否有一些参数需要设置。

    [1] https://github.com/pravega/flink-connectors https://github.com/pravega/flink-connectors

    *来自志愿者整理的flink邮件归档

    2021-12-06 21:22:11
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