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Home/Questions/SQL/If manual partitions are created in a Hive data-warehouse table directory, and you query records from those partitions, will you see the data? If not, how can this be fixed?

If manual partitions are created in a Hive data-warehouse table directory, and you query records from those partitions, will you see the data? If not, how can this be fixed?

SQLmedium0.6 min readPremium
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Asked at 1 company
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1,863
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Asked at these companies
Dunnhumby
Key Concepts Tested
partition
Expert AnswerPremium
117 wordsInterview-ready
Manually created Hive partition directories (e.g., /table/country=US/date=2024-01-01/) are not visible to Hive until metadata is added. Hive uses the metastore to find partitions; manually created dirs are unknown. Fix: run MSCK REPAIR TABLE table_name to scan the table directory and add partition metadata. Alternative: ALTER TABLE table_name ADD PARTITION (country='US', date='2024-01-01') LOCATION '/path/to/partition'....
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