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HCatalog Data Type | Java Class in MapReduce | Values | ||
---|---|---|---|---|
TINYINT | java.lang.Byte | -128 to 127 | ||
SMALLINT | java.lang.Short | -(2^15) to (2^15)-1, which is -32,768 to 32,767 | ||
INT | java.lang.Integer | -(2^31) to (2^31)-1, which is -2,147,483,648 to 2,147,483,647 | ||
BIGINT | java.lang.Long | -(2^63) to (2^63)-1, which is -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 | ||
BOOLEAN | java.lang.Boolean | true or false | ||
FLOAT | java.lang.Float | single-precision floating-point value | ||
DOUBLE | java.lang.Double | double-precision floating-point value | ||
DECIMAL | java.math.BigDecimal | exact floating-point value with 38-digit precision | ||
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="0c18d09da9ecc92a-834e0dcb-4868419e-b55dacfc-315e4ac235541190fb9e9345"><ac:plain-text-body><![CDATA[ | BINARY | byte[] | binary data | ]]></ac:plain-text-body></ac:structured-macro> |
STRING | java.lang.String | character string | ||
STRUCT | java.util.List | structured data | ||
ARRAY | java.util.List | values of one data type | ||
MAP | java.util.Map | key-value pairs |
For general information about Hive data types, see Hive Data Types and Type System.
Running MapReduce with HCatalog
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