Hive SerDe for CSV
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Abhinav Sarkar 8daf918fc8 Added line end delimiter and null string support 6 лет назад
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readme.md

Hive CSV Support

Build Status

This SerDe adds real CSV input and ouput support to hive using the excellent opencsv library.

Using

Basic Use

add jar path/to/csv-serde.jar;

create table my_table(a string, b string, ...)
  row format serde 'com.bizo.hive.serde.csv.CSVSerde'
  stored as textfile
;

Custom formatting

The default separator, quote, and escape characters from the opencsv library are:

DEFAULT_ESCAPE_CHARACTER \
DEFAULT_QUOTE_CHARACTER  "
DEFAULT_SEPARATOR        ,

You can also specify custom separator, quote, or escape characters.

add jar path/to/csv-serde.jar;

create table my_table(a string, b string, ...)
 row format serde 'com.bizo.hive.serde.csv.CSVSerde'
 with serdeproperties (
   "separatorChar" = "\t",
   "quoteChar"     = "'",
   "escapeChar"    = "\\"
  )	  
 stored as textfile
;

Files

The following include opencsv along with the serde, so only the single jar is needed. Currently built against Hive 0.11.0, but should be compatible with other hive versions.

Building

Run mvn package to build. Both a basic artifact as well as a “fat jar” (with opencsv) are produced.

Eclipse support

Run mvn eclipse:eclipse to generate .project and .classpath files for eclipse.

License

csv-serde is open source and licensed under the Apache 2 License.