[HUDI-6368] Strength avro record merger #8953
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danny0405
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* move the merging operation decision (preCombining or base/delta merge) to the invoker, it is deterministic when initializing the record merger * expose the operation mode as an interface so that some of the merger like HoodieSparkValidateDuplicateKeyRecordMerger can have custom logic * pre register the object cache of the record merger to mediate the complexity * fix the equility check of payload within FlinkWriteHelper * add default merger type for merged/unmerged log scanner
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xiarixiaoyao
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Jun 14, 2023
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