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https://issues.apache.org/jira/browse/SAMZA-958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15312845#comment-15312845
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Xinyu Liu commented on SAMZA-958:
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RB posted: https://reviews.apache.org/r/48182/. Please take a look.
> Make store/cache thread safe
> ----------------------------
>
> Key: SAMZA-958
> URL: https://issues.apache.org/jira/browse/SAMZA-958
> Project: Samza
> Issue Type: Sub-task
> Reporter: Xinyu Liu
> Assignee: Xinyu Liu
>
> All the existing stores/cache need to be thread safe in order to be used by
> multithreaded tasks. The following changes are made to ensure the thread
> safety of the stores:
> - For CachedStore, use sychronized lock for each public function;
> - For current InMemoryKeyValueStore, use ConcurrentSkipListMap as underlying
> map for thread safety.
> - For store Iterator, do not support remove functionality (throw
> UnsupportedOperationException like RocksDb does today).
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