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https://issues.apache.org/jira/browse/FLINK-17397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17183001#comment-17183001
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Jark Wu commented on FLINK-17397:
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I think this issue is to support the same feature as Hive source which can be
used as a lookup table in "processing time temporal join". In the
implementation, it loads all the data under the specified path into a memory
cache, and lookup the cache for every incoming left record.
> Filesystem support lookup table source
> ---------------------------------------
>
> Key: FLINK-17397
> URL: https://issues.apache.org/jira/browse/FLINK-17397
> Project: Flink
> Issue Type: Sub-task
> Components: Connectors / FileSystem
> Reporter: Jingsong Lee
> Priority: Major
> Labels: starter
> Fix For: 1.12.0
>
>
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