[jira] [Created] (FLINK-31553) Choose Catalog, non-url based

["Marios Trivyzas (Jira)" <ji...@apache.org>]

Marios Trivyzas created FLINK-31553:
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             Summary: Choose Catalog, non-url based
                 Key: FLINK-31553
                 URL: https://issues.apache.org/jira/browse/FLINK-31553
             Project: Flink
          Issue Type: Improvement
          Components: Connectors / JDBC
            Reporter: Marios Trivyzas


Currently. the {*}Catalog{*}{*}/Dialect{*} (etc.) is chosen automatically based on the URL provided. This takes place in {*}{color:#000000}JdbcDialectFactory{color}#load{*}, using the: {*}{color:#000000}JdbcDialectFactory{color}#acceptsURL{*}, so for a URL *jdbc:postgresql://...* the PostgresCatalog/Dialect is used. *CrateDB* used the same driver and URL but needs it's own Catalog/Dialect (etc.) as it has it's own stack of internal tables, type sytem, etc. (see https://issues.apache.org/jira/browse/FLINK-31551) So if a user wants to use *CrateDB,* currently, needs to use the legacy CrateDB driver which uses the jdbc:crate://... url.

Ideally, there should be another way, not only url based, that allows the user to use a given url, but choose the dialect manually. It could be some parameter on the catalog definition or even a special URL parameter like *?dialect=CrateDB* or so.

 

Other DBs that use implement the PostgreSQL wire protocol and are compatible with the PostgreSQL JDBC driver, but need their own Catalog/Dialect etc. would benefit from this. (e.g.: CockroachDB)

 



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