Mark Cho created KAFKA-7709:
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Summary: ConcurrentModificationException occurs when iterating
through multiple partitions in Sender.getExpiredInflightBatches
Key: KAFKA-7709
URL: https://issues.apache.org/jira/browse/KAFKA-7709
Project: Kafka
Issue Type: Bug
Components: core
Affects Versions: 2.1.0
Reporter: Mark Cho
In Sender.getExpiredInflightBatches method, delivery.timeout on multiple
partitions causes ConcurrentModificationException due to the underlying Java
collection being mutated while being iterated on.
In Java HashMap, you cannot mutate the underlying map while iterating through
it, as this will cause ConcurrentModificationException.
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