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Posted to issues@flink.apache.org by "YangFei (JIRA)" <ji...@apache.org> on 2019/05/06 07:49:01 UTC

[jira] [Commented] (FLINK-12410) KafkaTopicPartition cannot be used as a POJO type because not all fields are valid POJO fields

    [ https://issues.apache.org/jira/browse/FLINK-12410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16833572#comment-16833572 ] 

YangFei commented on FLINK-12410:
---------------------------------

The topic field in KafkaTopicPartition.java doesn't have a setter function , because the topic field only init by constructor. 

I don't think this is a bug, GenericType can also ok.

So, what's blocking you?

 

> KafkaTopicPartition cannot be used as a POJO type because not all fields are valid POJO fields
> ----------------------------------------------------------------------------------------------
>
>                 Key: FLINK-12410
>                 URL: https://issues.apache.org/jira/browse/FLINK-12410
>             Project: Flink
>          Issue Type: Bug
>          Components: Connectors / Kafka
>    Affects Versions: 1.8.0
>            Reporter: Chethan U
>            Priority: Blocker
>
> While Pushing data to Kafka Topic using Pojo, there is an error: "INFO org.apache.flink.api.java.typeutils.TypeExtractor - Class class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition cannot be used as a POJO type because not all fields are valid POJO fields, and must be processed as GenericType"
> {code:java}
> // code placeholder
> 09:18:27,633 INFO org.apache.flink.api.java.typeutils.TypeExtractor - class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition does not contain a setter for field topic
> 09:18:27,634 INFO org.apache.flink.api.java.typeutils.TypeExtractor - Class class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition cannot be used as a POJO type because not all fields are valid POJO fields, and must be processed as GenericType. Please read the Flink documentation on "Data Types & Serialization" for details of the effect on performance.
> 09:18:27,633 INFO org.apache.flink.api.java.typeutils.TypeExtractor - class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition does not contain a setter for field topic
> 09:18:27,635 INFO org.apache.flink.api.java.typeutils.TypeExtractor - Class class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition cannot be used as a POJO type because not all fields are valid POJO fields, and must be processed as GenericType. Please read the Flink documentation on "Data Types & Serialization" for details of the effect on performance.
> 09:18:27,635 INFO org.apache.flink.api.java.typeutils.TypeExtractor - class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition does not contain a setter for field topic
> 09:18:27,636 INFO org.apache.flink.api.java.typeutils.TypeExtractor - Class class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition cannot be used as a POJO type because not all fields are valid POJO fields, and must be processed as GenericType. Please read the Flink documentation on "Data Types & Serialization" for details of the effect on performance.
> 09:18:27,639 INFO org.apache.flink.api.java.typeutils.TypeExtractor - class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition does not contain a setter for field topic
> 09:18:27,642 INFO org.apache.flink.api.java.typeutils.TypeExtractor - Class class org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition cannot be used as a POJO type because not all fields are valid POJO fields, and must be processed as GenericType. Please read the Flink documentation on "Data Types & Serialization" for details of the effect on performance.
> 09:18:27,654 INFO org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase - No restore state for FlinkKafkaConsumer.
> 09:18:27,655 INFO org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase - No restore state for FlinkKafkaConsumer.
> 09:18:27,655 INFO org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase - No restore state for FlinkKafkaConsumer.
> 09:18:27,654 INFO org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase - No restore state for FlinkKafkaConsumer.
> {code}



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