理论上可以eventtime processtime混用,但是下面代码测试发现bug,输入一条数据会一直输出.

flink github无法提bug/问题. apache jira账户新建后竟然flink又需要一个账户,放弃

bug复现操作

idea运行代码后 往source kafka发送一条数据  

a,1,1690304400000

可以看到无限输出:

理论上时间语义不建议混用,但是在rich函数中的确可以做到混用且正常使用

问题复现代码

package com.yy.flinkWindowAndTrigger

import com.yy.flinkWindow.M1
import org.apache.flink.api.common.eventtime.WatermarkStrategy
import org.apache.flink.configuration.{Configuration, RestOptions}
import org.apache.flink.connector.kafka.source.KafkaSource
import org.apache.flink.connector.kafka.source.enumerator.initializer.OffsetsInitializer
import org.apache.flink.streaming.api.functions.timestamps.BoundedOutOfOrdernessTimestampExtractor
import org.apache.flink.streaming.api.scala._
import org.apache.flink.streaming.api.windowing.assigners.TumblingEventTimeWindows
import org.apache.flink.streaming.api.windowing.time.Time
import org.apache.flink.streaming.api.windowing.time.Time.seconds
import org.apache.flink.streaming.api.windowing.triggers.{ContinuousProcessingTimeTrigger, CountTrigger, ProcessingTimeTrigger}
import org.apache.flink.streaming.api.windowing.windows.TimeWindow
import org.joda.time.Seconds


object flinkEventWindowAndProcessTriggerBUGLearn {
  def main(args: Array[String]): Unit = {


    // flink 启动本地webui
    val conf = new Configuration
    conf.setInteger(RestOptions.PORT, 28080)

    //    val env = StreamExecutionEnvironment.getExecutionEnvironment
    val env = StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(conf)
    //    val env = StreamExecutionEnvironment.getExecutionEnvironment
    env.setParallelism(1)
    env.configure(conf)


    /*
    kafka输入:
        a,1,1690304400000        //对应 2023-07-26 01:00:00 (无限输出)       //如果传入 a,1,1693037756000 对应:2023-08-26 16:15:56 (1条/s)
        a,1,7200000               // 1970-01-1 10:00:00
     */
    val brokers = "172.18.105.147:9092"
    val source = KafkaSource.builder[String].setBootstrapServers(brokers)
      .setTopics("t1")
      .setGroupId("my-group-23asdf46")
      .setStartingOffsets(OffsetsInitializer.latest())
      // .setDeserializer() // 参数: KafkaRecordDeserializationSchema
      .setDeserializer(new M1())
      .build()


    val ds1 = env.fromSource(source, WatermarkStrategy.noWatermarks(), "Kafka Source")


    val s1 = ds1
      .map(_.split(","))
      .map(x => C1(x(0), x(1).toInt, x(2).toLong)) // key number 时间戳
      .assignTimestampsAndWatermarks(new OTAWatermarks(Time.seconds(0)))
      .keyBy(_.f1)
      .window(TumblingEventTimeWindows.of(seconds(10)))
      .trigger(ContinuousProcessingTimeTrigger.of[TimeWindow](seconds(10L)))
      .reduce((x, y) => C1(x.f1, x.f2 + y.f2, 100L))


    s1.print()


    env.execute("KafkaNewSourceAPi")
  }

  // 乱序流
  class OTAWatermarks(time: Time) extends BoundedOutOfOrdernessTimestampExtractor[C1](time) {
    override def extractTimestamp(element: C1): Long = {
      element.f3
    }
  }


  // key num timestamp
  case class C1(f1: String, f2: Int, f3: Long)
}

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maven pom

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>FlinkLocalDemo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>FlinkLocalDemo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <flink.version>1.17.1</flink.version>
        <scala.binary.version>2.12</scala.binary.version>
        <scala.version>2.12.8</scala.version>
    </properties>



    <dependencies>
        <!-- https://mvnrepository.com/artifact/joda-time/joda-time -->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>2.12.5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-avro</artifactId>
            <version>${flink.version}</version>
        </dependency>


        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-runtime-web</artifactId>
            <version>${flink.version}</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/com.alibaba.fastjson2/fastjson2 -->
        <dependency>
            <groupId>com.alibaba.fastjson2</groupId>
            <artifactId>fastjson2</artifactId>
            <version>2.0.33</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.83</version>
<!--            <version>1.2.17</version>-->
        </dependency>


        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-table-common -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table-common</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <!-- 引入flink1.13.0 scala2.12.12   -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-connector-kafka</artifactId>
            <version>${flink.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-json</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-scala_${scala.binary.version}</artifactId>
            <version>${flink.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-scala_${scala.binary.version}</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-csv</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <!-- Either... -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table-api-java-bridge</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <!-- or... -->

<!--        下面几个是代码中写sql需要的包 四个中一个都不能少 -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table-api-scala-bridge_${scala.binary.version}</artifactId>
            <version>${flink.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-table-planner-loader -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table-planner-loader</artifactId>
            <version>${flink.version}</version>
<!--            <scope>test</scope>-->
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.flink/flink-table-runtime -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table-runtime</artifactId>
            <version>${flink.version}</version>
            <scope>provided</scope>
        </dependency>
        <!--  https://mvnrepository.com/artifact/org.apache.flink/flink-connector-files -->
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-connector-files</artifactId>
            <version>${flink.version}</version>
        </dependency>


<!--        注意: flink-table-planner-loader 不能和 flink-table-planner_${scala.binary.version} 共存-->
        <!--        <dependency>-->
        <!--            <groupId>org.apache.flink</groupId>-->
        <!--            <artifactId>flink-table-planner_${scala.binary.version}</artifactId>-->
        <!--            <version>${flink.version}</version>-->
        <!--            <scope>provided</scope>-->
        <!--        </dependency>-->


        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-clients</artifactId>
            <version>${flink.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-connector-jdbc</artifactId>
            <version>3.1.0-1.17</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.11</version>
        </dependency>


    </dependencies>
    <build>
            <plugins>
                <!-- 打jar插件 -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-shade-plugin</artifactId>
                    <version>2.4.3</version>
                    <executions>
                        <execution>
                            <phase>package</phase>
                            <goals>
                                <goal>shade</goal>
                            </goals>
                            <configuration>
                                <filters>
                                    <filter>
                                        <artifact>*:*</artifact>
                                        <excludes>
                                            <exclude>META-INF/*.SF</exclude>
                                            <exclude>META-INF/*.DSA</exclude>
                                            <exclude>META-INF/*.RSA</exclude>
                                        </excludes>
                                    </filter>
                                </filters>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <groupId>org.scala-tools</groupId>
                    <artifactId>maven-scala-plugin</artifactId>
                    <version>2.15.2</version>
                    <executions>
                        <execution>
                            <goals>
                                <goal>compile</goal>
                                <goal>testCompile</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            <plugin>
                <groupId>net.alchim31.maven</groupId>
                <artifactId>scala-maven-plugin</artifactId>
                <version>3.2.2</version>
                <executions>
                    <execution>
                        <id>scala-compile-first</id>
                        <phase>process-resources</phase>
                        <goals>
                            <goal>add-source</goal>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <scalaVersion>${scala.version}</scalaVersion>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.5.5</version>
                <configuration>
                    <!--这部分可有可无,加上的话则直接生成可运行jar包-->
                    <!--<archive>-->
                    <!--<manifest>-->
                    <!--<mainClass>${exec.mainClass}</mainClass>-->
                    <!--</manifest>-->
                    <!--</archive>-->
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
            </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.1</version>
                    <configuration>
                        <source>11</source>
                        <target>11</target>
                    </configuration>
                </plugin>
        </plugins>
    </build>
</project>