flink-cdc
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add primary key necessity.
If your table has no primary key,you will not see any data in flink (no matter history or new ) and has no error message.
cloud you add this hint in FAQ? I cannot found the way to edit the FAQ document.
cc @leonardBang
cc @leonardBang
The tables without primary keys have been supported in 2.4.0. So I close this PR now. Thanks.