实时计算 Flink版自定义的相关内容

问答 2021-12-09 来自：开发者社区

flink-metric中的自定义reporter是什么啊？

问答 2021-12-08 来自：开发者社区

Flink1.7.2，TableApi的自定义聚合函数中如何使用自定义状态

尝试在Flink的自定义聚合函数中使用State，发现open函数中通过FunctionContext无法获取到RuntimeContext 如何在聚合函数中使用State? import org.apache.flink.api.common.typeinfo.{BasicTypeInfo, TypeInformation} import org.apache.flink.api.jav...

问答 2021-12-08 来自：开发者社区

Flink On Yarn部署模式下，提交Flink作业如何指定自定义log4j 配置

Flink On Yarn 日志配置log4j.properties 文件默认读取flink/conf中的log4j.properties。有没有方法可以在提交flink 作业时指定自己编写的log4.properties。 Flink版本:1.9.1 部署方式：Flink on Yarn*来自志愿者整理的flink邮件归档

问答 2021-12-08 来自：开发者社区

flink sqlsubmit自定义程序报错

大家好！参考云邪写的sqlsubmit提交SQL文件，我修改后提交，SQL文件已经识别了，可以创建表。但是提交任务insert的时候，在local模式下就报错。 Flink版本是1.12.0。我的提交命令是:$FLINK_HOME/bin/flink run -m ip:8081 -d -p 3 -c sql.submit.SqlSubmit $SQL_JAR -f $sql_file 在lo....

问答 2021-12-08 来自：开发者社区

flink 1.11 udtf可以像1.10那样自定义返回类型吗？

flink 1.11 udtf可以像1.10那样自定义返回类型不我希望可以像flink 1.10这样： @Override public TypeInformation getResultType() { return new RowTypeInfo(Types.STRING, Types.STRING); &nb...

问答 2021-12-08 来自：开发者社区

flink-sql-gateway如何使用flink自定义的udf

各位大佬，Flink-sql-gateway 提交flink sql任务，如何使用flink自定义的udf*来自志愿者整理的flink邮件归档

问答 2021-12-07 来自：开发者社区

FLINK TABLE API 自定义聚合函数UDAF从check point恢复任务报状态序列

大家好：我在使用flink table api 实现group by 聚合操作的时候，自定义了一个UDAF函数，首次在集群上运行的时候是正确的，但是从check point恢复任务的时候报下面错误，但是使用内置的函数就没问题，不知道我该怎么解决呢？ java.lang.RuntimeException: Error while getting state at org.apache.flink.....

问答 2021-12-07 来自：开发者社区

flink stream 如何选择使用 broadcast还是自定义source？

有一个需求，配置内容在redis里面，事件流需要与redis里面的配置信息做etl，问一下怎么选择以下3种？ 1、redis自定义source，与event stream connect 2、使用异步io 3、broadcast*来自志愿者整理的flink邮件归档

问答 2021-12-07 来自：开发者社区

flink1.11.0 sql自定义UDAF包含复合类型时报Incompatible types

本人使用flink版本为1.11.0，自定义udaf如下： public class GetContinuousListenDuration extends AggregateFunction { private static final DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd...

问答 2021-12-07 来自：开发者社区

自定义metrics reporter 如何不通过flink conf来注册并生效

Hi all, 请问实现了 MetricReporter, CharacterFilter，Scheduled, Reporter 的自定义 customerReporter 如何能在代码env里面注册并实现metric上报，要求不在flink conf.xml 文件里面配置该customerReporter的信息？需求：在自定义的source 和sink等算子里面计算处理成功，失败的...

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实时计算Flink版

阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，完全兼容开源的Apache Flink，比开源性能提升2～3倍，提供了完整的告警、监控、日志的解决方案、提升开发效率且无运维成本，并有社区专家提供技术支持。

立即开通

产品控制台

产品文档

实时同步

MySQL 到 Hologres

Kafka 到 Hologres

功能对比

开源Flink对比

成本优化

作业自动调优