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Custom classifiers cannot be used to create partitioned table if the data itself is not partitioned.
Crawler creates a partitioned table based on directory structure and schema similarity at each level. Suppose there are 2 sub-directories in a target path and data in these directories are at least 70% similar, then it creates a partitioned table, otherwise it creates two table one for each sub-directory.
回答済み 1年前
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Thanks Sachin , do you have any workflow recommendation besides repartition of data directories ?