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https://issues.apache.org/jira/browse/KAFKA-5198?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on KAFKA-5198 started by Colin P. McCabe.
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> RocksDbStore#openIterators should be synchronized, since it is accessed from
> multiple threads
> ---------------------------------------------------------------------------------------------
>
> Key: KAFKA-5198
> URL: https://issues.apache.org/jira/browse/KAFKA-5198
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Colin P. McCabe
> Assignee: Colin P. McCabe
>
> Currently, {{RocksDBIterator#close}} accesses {{RocksDbStore#openIterators}}
> without taking the {{RocksDbStore}} lock. The only lock
> {{RocksDBIterator#close}} holds is a lock on the iterator object, which does
> not help here. So {{RocksDbStore#openIterators}} should be made
> synchronized. Otherwise there is undefined behavior, including
> {{ConcurrentModificationExceptions}}.
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