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https://issues.apache.org/jira/browse/FLINK-17178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17084607#comment-17084607
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Jark Wu commented on FLINK-17178:
---------------------------------

[~lzljs3620320], [~ykt836], what do you think about this feature?
I'm a little concerned because ALL cache will have a big impact on external 
systems and a little hack (disguise scan as lookup). 
I was thinking to use changelog to support higher throughput dimension join. 

>  Provide "ALL" cache strategy in LookupFunction
> -----------------------------------------------
>
>                 Key: FLINK-17178
>                 URL: https://issues.apache.org/jira/browse/FLINK-17178
>             Project: Flink
>          Issue Type: New Feature
>          Components: Connectors / Common
>            Reporter: Lijie Wang
>            Priority: Major
>
> We provide "ALL" cache strategy mentioned in FLINK-13252, motivation as 
> follow:
> Maintain the entire dimension table in memory to improve performance. There 
> is no IO overhead when we lookup the cached table. Reload dimension table 
> periodically for update, and we can reload asynchronously with little IO 
> delay.



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