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Posted to jira@kafka.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2017/12/30 13:42:03 UTC
[jira] [Updated] (KAFKA-6412) Improve synchronization in
CachingKeyValueStore methods
[ https://issues.apache.org/jira/browse/KAFKA-6412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Yu updated KAFKA-6412:
--------------------------
Attachment: k-6412.v1.txt
I ran {{./gradlew streams:test}} with patch which passed.
> Improve synchronization in CachingKeyValueStore methods
> -------------------------------------------------------
>
> Key: KAFKA-6412
> URL: https://issues.apache.org/jira/browse/KAFKA-6412
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ted Yu
> Attachments: k-6412.v1.txt
>
>
> Currently CachingKeyValueStore methods are synchronized at method level.
> It seems we can use read lock for getter and write lock for put / delete methods.
> For getInternal(), if the underlying thread is streamThread, the getInternal() may trigger eviction. This can be handled by obtaining write lock at the beginning of the method for streamThread.
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