Sebastian Liu created FLINK-20416:
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Summary: Need a cached catalog for batch SQL job
Key: FLINK-20416
URL: https://issues.apache.org/jira/browse/FLINK-20416
Project: Flink
Issue Type: Improvement
Components: Table SQL / API, Table SQL / Planner
Reporter: Sebastian Liu
For OLAP scenarios, There are usually some analytical queries which running
time is relatively short. These queries are also sensitive to latency. In the
current Blink sql processing, parse/validate/optimize stages are all need meta
data from catalog API. But each request to the catalog requires re-run of the
underlying meta query.
We may need a cached catalog which can cache the table schema and statistic
info to avoid unnecessary repeated meta requests.
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