Chia-Ping Tsai created KAFKA-17269:
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Summary: Fix ConcurrentModificationException caused by
NioEchoServer.closeNewChannels
Key: KAFKA-17269
URL: https://issues.apache.org/jira/browse/KAFKA-17269
Project: Kafka
Issue Type: Test
Reporter: Chia-Ping Tsai
Assignee: Chia-Ping Tsai
see CI:
https://ci-builds.apache.org/blue/organizations/jenkins/Kafka%2Fkafka-pr/detail/PR-16795/1/tests
`newChannels` is a SYNC ArrayList, however, the helper method does not protect
"iteration". Hence, we should add `synchronized (newChannels)` for it.
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