[
https://issues.apache.org/jira/browse/KAFKA-13155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jason Gustafson updated KAFKA-13155:
------------------------------------
Description:
Caught this exception in a system test run:
{code}
[2021-08-02 07:51:54,528] ERROR Uncaught exception in thread
'transactional-message-copier-shutdown-hook':
(org.apache.kafka.common.utils.KafkaThread)
java.util.ConcurrentModificationException: KafkaConsumer is not safe for
multi-threaded access
at
org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:2447)
at
org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2330)
at
org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2308)
at
org.apache.kafka.tools.TransactionalMessageCopier.lambda$main$1(TransactionalMessageCopier.java:331)
at java.lang.Thread.run(Thread.java:748)
{code}
The pattern for closing the consumer is not safe.
was:
Caught this exception in a system test run:
```
[2021-08-02 07:51:54,528] ERROR Uncaught exception in thread
'transactional-message-copier-shutdown-hook':
(org.apache.kafka.common.utils.KafkaThread)
java.util.ConcurrentModificationException: KafkaConsumer is not safe for
multi-threaded access
at
org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:2447)
at
org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2330)
at
org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2308)
at
org.apache.kafka.tools.TransactionalMessageCopier.lambda$main$1(TransactionalMessageCopier.java:331)
at java.lang.Thread.run(Thread.java:748)
```
The pattern for closing the consumer is not safe.
> ConcurrentModificationException in TransactionalMessageCopier
> -------------------------------------------------------------
>
> Key: KAFKA-13155
> URL: https://issues.apache.org/jira/browse/KAFKA-13155
> Project: Kafka
> Issue Type: Bug
> Reporter: Jason Gustafson
> Priority: Major
>
> Caught this exception in a system test run:
> {code}
> [2021-08-02 07:51:54,528] ERROR Uncaught exception in thread
> 'transactional-message-copier-shutdown-hook':
> (org.apache.kafka.common.utils.KafkaThread)
> java.util.ConcurrentModificationException: KafkaConsumer is not safe for
> multi-threaded access
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:2447)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2330)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.close(KafkaConsumer.java:2308)
> at
> org.apache.kafka.tools.TransactionalMessageCopier.lambda$main$1(TransactionalMessageCopier.java:331)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> The pattern for closing the consumer is not safe.
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