THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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RCFile stores table data in a flat file consisting of binary key/value pairs. It first partitions rows horizontally into row splits. , and then it vertically partitions each row split in a columnar way. RCFile first stores the metadata of a row split , as the key part of a record, and all the data of a row split as the value part.
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