[ 
https://issues.apache.org/jira/browse/FLINK-17178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327910#comment-17327910
 ] 

Flink Jira Bot commented on FLINK-17178:
----------------------------------------

This major issue is unassigned and itself and all of its Sub-Tasks have not 
been updated for 30 days. So, it has been labeled "stale-major". If this ticket 
is indeed "major", please either assign yourself or give an update. Afterwards, 
please remove the label. In 7 days the issue will be deprioritized.

>  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
>              Labels: stale-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.
> The cache needs to be reloaded periodically for update。
> Limitations:
>  1. It's suitable for scenario that users don't care the lateness so much, 
> periodically updating can satisfy them.
>  2. The “ALL” cache needs more memory, so it's suitable for small dimension 
> table.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Reply via email to