Hive CSV Support

This work was contributed to the apache hive project and is maintained there, see details here.

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.

csv-serde-1.1.3-1.2.1-all.jar

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.

ogrodnek / csv-serde