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Why did Hive intially not support IN/EXISTS operators? Was it related to the HDFS architecture?

Why did Hive intially not support IN/EXISTS operators? Was it related to the HDFS architecture?

New Contributor

Hi to everyone. I know that Hive nowadays has some support for the IN/EXISTS operators, but why did it initially opt instead for the SEMI JOIN? Was that in any way related to the HDFS architecture?

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