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https://issues.apache.org/jira/browse/FLINK-32444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17737739#comment-17737739
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Benchao Li commented on FLINK-32444:
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Big +1 on this, we've enabled it for all production jobs, and get a very good
performance improvement.
> 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
> Priority: Major
> 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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