[Bug] [0.7.0] CDCSOURCE 全局变量问题

[cooltnt]

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• [X] I had searched in the issues and found no similar issues.

What happened

scan.startup.mode 想用全局变量控制, 但是一旦开启, 就会提示 'sink.table-name' = 'public.${tableName}' 处的变量tableName 未定义。 该变量不应该是属于sink表默认的元数据（环境）变量吗？ 不开启全局变量是能正常运行的。

EXECUTE CDCSOURCE cdc_mysql WITH ( 'connector' = 'mysql-cdc', 'hostname' = '127.0.0.1', 'port' = '3306', 'username' = 'root', 'password' = '123456', 'checkpoint' = '600000', 'scan.startup.mode' = 'initial', --${g_startup_mode}, -- 此处想用全局变量 'parallelism' = '1', 'table-name' = 'test.test_table', 'source.server-time-zone' = 'UTC', 'sink.url' = 'jdbc:postgresql://127.0.0.1/cdc_test', 'sink.username' = 'test', 'sink.password' = 'test', 'sink.connector' = 'jdbc', 'sink.sink.db' = 'cdc_test', 'sink.table-name' = 'public.${tableName}' );

What you expected to happen

全局变量，作业变量，或元数据变量能共存

How to reproduce

在cdcsource方式下， 不使用全局变量

Anything else

No response

Version

0.7.0

Are you willing to submit PR?

• [ ] Yes I am willing to submit a PR!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[aiwenmo]

目前 CDCSOURCE 不支持全局变量

[mamacmm]

本来也想用变量生成 label-prefix ，发现不支持。

因为doris里面的label-prefix 需要每次执行任务前修改下，所以想改成这样：

'sink.sink.label-prefix' = '${schemaName}_${tableName}_'+UUID()

但测试发现不起作用