Kohei Nozaki created KAFKA-16055:
------------------------------------
Summary: Thread unsafe use of HashMap stored in
QueryableStoreProvider#storeProviders
Key: KAFKA-16055
URL: https://issues.apache.org/jira/browse/KAFKA-16055
Project: Kafka
Issue Type: Bug
Affects Versions: 3.6.1
Reporter: Kohei Nozaki
This was originally raised in [a kafka-users
post|https://lists.apache.org/thread/gpct1275bfqovlckptn3lvf683qpoxol].
There is a HashMap stored in QueryableStoreProvider#storeProviders ([code
link|https://github.com/apache/kafka/blob/3.6.1/streams/src/main/java/org/apache/kafka/streams/state/internals/QueryableStoreProvider.java#L39])
which can be mutated by a KafkaStreams#removeStreamThread() call. This can be
problematic when KafkaStreams#store is called from a separate thread.
We need to somehow make this part of code thread-safe by replacing it by
ConcurrentHashMap or/and using an existing locking mechanism.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
