Jark Wu created FLINK-32444:
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Summary: Enable object reuse for Flink SQL jobs by default
Key: FLINK-32444
URL: https://issues.apache.org/jira/browse/FLINK-32444
Project: Flink
Issue Type: New Feature
Components: Table SQL / API
Reporter: Jark Wu
Fix For: 1.18.0
Currently, object reuse is not enabled by default for Flink Streaming Jobs, but
is enabled by default for Flink Batch jobs. That is not consistent for
stream-batch unification. Besides, SQL operators are safe to enable object
reuse and this is a great performance improvement for SQL jobs.
We should also be careful with the Table-DataStream conversion case
(StreamTableEnvironment) which is not safe to enable object reuse by default.
Maybe we can just enable it for SQL Client/Gateway and TableEnvironment.
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