[jira] [Created] (FLINK-29111) deprecate 'lookup.async' and expose both async and sync lookup capabilities to planner

["lincoln lee (Jira)" <ji...@apache.org>]

lincoln lee created FLINK-29111:
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             Summary: deprecate 'lookup.async' and expose both async and sync lookup capabilities to planner
                 Key: FLINK-29111
                 URL: https://issues.apache.org/jira/browse/FLINK-29111
             Project: Flink
          Issue Type: Improvement
            Reporter: lincoln lee


FLIP-234 introduced a LOOKUP hint which support suggest planner to use sync or async lookup function by hint option 'async' = 'false' or 'true', also the planner prefers an async lookup when a connector has both sync and async lookup capabilities.

As discussed in the mailing list before ([https://lists.apache.org/thread/9k1sl2519kh2n3yttwqc00p07xdfns3h]), this 'lookup.async' option should be deprecated and refactor the hbase table source to expose both async and sync lookup capabilities to planner, so that users can switch to use the new query hint



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