[Feature][Spark]: Support duplicate-key-check when insert into and insert overwrite #484
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Description
for current, our insert overwrite && insert into dosen't check for duplicate key of input data.
Use case/motivation
insert into xxx as select * from source.
insert overwrite xxx as select * from source.
the source table may has duplicate row with same key. arctic spark writer shoud check input data.
Describe the solution
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Related issues
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Are you willing to submit a PR?
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