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[Improve][Jdbc] Optimize source data dynamic splitting when where_condition is configured #8691

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@ckl750

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@ckl750

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Description

We used the JDBC source plugin of the SeaTunnel engine to synchronize batch processing tasks and found that in the scenario of reading a small amount of data from a large table, the task splitting phase would consume a lot of time.

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Reading a small amount of data from a large table

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  • Yes I am willing to submit a PR!

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