Spring Batch:仅当使用者作业在生产者作业之前启动并且指定了正确的分区时,KafkaItemReader才起作用

如何解决Spring Batch:仅当使用者作业在生产者作业之前启动并且指定了正确的分区时,KafkaItemReader才起作用

我有一个简单的Spring Batch作业,该作业从具有3个分区的Kafka Topic中读取。我有以下发现/问题:

  1. 如果在将消息发布到主题后 开始了消费者作业,则消费者作业将无限期等待消息。使用者仅在首先启动然后再向该主题生成消息的情况下才使用消息。在现实世界中,我迫不及待要发布消息,然后开始执行消费者工作。我该如何解决?

  2. 我的主题有4个分区,但是只有当我向读者提供分区0、1和2时,使用者才能工作。如果我还提供了分区3,则消费者waitis infinitley和somtimes还会引发以下异常:

    Exception is......................... : 
    org.apache.kafka.common.errors.TimeoutException: Timeout of 60000ms 
    expired before successfully committing the current consumed offsets
    org.apache.kafka.common.errors.TimeoutException: Timeout of 60000ms 
    expired before successfully committing the current consumed offsets
    

消费者作业配置:

@Configuration
@EnableBatchProcessing
public class BatchConfiguration {

    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Bean
    public Job job() {
        return jobBuilderFactory.get("job").incrementer(new RunIdIncrementer())
                .start(testFileWritingStep()).build();
    }

    @Bean
    public Step testFileWritingStep() {
        return stepBuilderFactory.get("testFileWritingStep").<String,String>chunk(10)
                .reader(testKafkaItemReader()).writer(testFileWriter()).build();
    }

    @Bean
    public KafkaItemReader<String,String> testKafkaItemReader() {
        Properties props = new Properties();
        //not providing the actual broker hosts and ports on stackoverfow for security reasons..
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,"somebroker:someport,somebroker:someport,somebroker:someport");
        props.put(ConsumerConfig.GROUP_ID_CONFIG,"mygroup");
        props.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG,"SSL");
        props.put(SslConfigs.SSL_TRUSTSTORE_LOCATION_CONFIG,"src/main/resources/conf/trust.jks");
        props.put(SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG,"pass");
        props.put(SslConfigs.SSL_KEYSTORE_LOCATION_CONFIG,"src/main/resources/conf/loc.jks");
        props.put(SslConfigs.SSL_KEYSTORE_PASSWORD_CONFIG,"pass");
        props.put(SslConfigs.SSL_KEY_PASSWORD_CONFIG,"pass");

            
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,"org.apache.kafka.common.serialization.StringDeserializer");
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG,"org.apache.kafka.common.serialization.StringDeserializer");

        return new KafkaItemReaderBuilder<String,String>().partitions(0,1,2).consumerProperties(props)
                .name("myreader").saveState(true).topic("mytopic").build();
    }

    @Bean
    public FlatFileItemWriter<String> testFileWriter() {
        FlatFileItemWriter<String> writer = new FlatFileItemWriter<>();
        writer.setResource(new FileSystemResource(
                "I:/CK/data/output.dat"));
        writer.setAppendAllowed(false);
        writer.setShouldDeleteIfExists(true);
        DelimitedLineAggregator<String> lineAggregator = new DelimitedLineAggregator<>();
        lineAggregator.setDelimiter(",");
        writer.setLineAggregator(lineAggregator);
        return writer;
    }
}

版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。

相关推荐


依赖报错 idea导入项目后依赖报错,解决方案:https://blog.csdn.net/weixin_42420249/article/details/81191861 依赖版本报错:更换其他版本 无法下载依赖可参考:https://blog.csdn.net/weixin_42628809/a
错误1:代码生成器依赖和mybatis依赖冲突 启动项目时报错如下 2021-12-03 13:33:33.927 ERROR 7228 [ main] o.s.b.d.LoggingFailureAnalysisReporter : *************************** APPL
错误1:gradle项目控制台输出为乱码 # 解决方案:https://blog.csdn.net/weixin_43501566/article/details/112482302 # 在gradle-wrapper.properties 添加以下内容 org.gradle.jvmargs=-Df
错误还原:在查询的过程中,传入的workType为0时,该条件不起作用 &lt;select id=&quot;xxx&quot;&gt; SELECT di.id, di.name, di.work_type, di.updated... &lt;where&gt; &lt;if test=&qu
报错如下,gcc版本太低 ^ server.c:5346:31: 错误:‘struct redisServer’没有名为‘server_cpulist’的成员 redisSetCpuAffinity(server.server_cpulist); ^ server.c: 在函数‘hasActiveC
解决方案1 1、改项目中.idea/workspace.xml配置文件,增加dynamic.classpath参数 2、搜索PropertiesComponent,添加如下 &lt;property name=&quot;dynamic.classpath&quot; value=&quot;tru
删除根组件app.vue中的默认代码后报错:Module Error (from ./node_modules/eslint-loader/index.js): 解决方案:关闭ESlint代码检测,在项目根目录创建vue.config.js,在文件中添加 module.exports = { lin
查看spark默认的python版本 [root@master day27]# pyspark /home/software/spark-2.3.4-bin-hadoop2.7/conf/spark-env.sh: line 2: /usr/local/hadoop/bin/hadoop: No s
使用本地python环境可以成功执行 import pandas as pd import matplotlib.pyplot as plt # 设置字体 plt.rcParams[&#39;font.sans-serif&#39;] = [&#39;SimHei&#39;] # 能正确显示负号 p
错误1:Request method ‘DELETE‘ not supported 错误还原:controller层有一个接口,访问该接口时报错:Request method ‘DELETE‘ not supported 错误原因:没有接收到前端传入的参数,修改为如下 参考 错误2:cannot r
错误1:启动docker镜像时报错:Error response from daemon: driver failed programming external connectivity on endpoint quirky_allen 解决方法:重启docker -&gt; systemctl r
错误1:private field ‘xxx‘ is never assigned 按Altʾnter快捷键,选择第2项 参考:https://blog.csdn.net/shi_hong_fei_hei/article/details/88814070 错误2:启动时报错,不能找到主启动类 #
报错如下,通过源不能下载,最后警告pip需升级版本 Requirement already satisfied: pip in c:\users\ychen\appdata\local\programs\python\python310\lib\site-packages (22.0.4) Coll
错误1:maven打包报错 错误还原:使用maven打包项目时报错如下 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources)
错误1:服务调用时报错 服务消费者模块assess通过openFeign调用服务提供者模块hires 如下为服务提供者模块hires的控制层接口 @RestController @RequestMapping(&quot;/hires&quot;) public class FeignControl
错误1:运行项目后报如下错误 解决方案 报错2:Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project sb 解决方案:在pom.
参考 错误原因 过滤器或拦截器在生效时,redisTemplate还没有注入 解决方案:在注入容器时就生效 @Component //项目运行时就注入Spring容器 public class RedisBean { @Resource private RedisTemplate&lt;String
使用vite构建项目报错 C:\Users\ychen\work&gt;npm init @vitejs/app @vitejs/create-app is deprecated, use npm init vite instead C:\Users\ychen\AppData\Local\npm-