Bowen Li created FLINK-16781:
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Summary: add built-in cache mechanism for LookupableTableSource in
lookup join
Key: FLINK-16781
URL: https://issues.apache.org/jira/browse/FLINK-16781
Project: Flink
Issue Type: Improvement
Components: Table SQL / API
Reporter: Bowen Li
Currently there's no built-in cache mechanism for LookupableTableSource.
Developers have to either build their own cache or give up caching and bear
with poor lookup performance.
Flink should provide a generic caching layer for all the LookupableTableSource
to take advantage of.
cc [~ykt836] [~jark] [~lzljs3620320]
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