问用于ORC或RC格式的配置单元Json SerDE

EN

insert overwrite local directory '/home/cloudera/local/mytable' 
stored as orc 
select '{"mycol":123,"mystring","Hello"}'
;

create external table verify_data (rec string) 
stored as orc 
location 'file:////home/cloudera/local/mytable'
;

select * from verify_data
;

create external table mytable (myint int,mystring string)
row format serde 'org.apache.hive.hcatalog.data.JsonSerDe' 
stored as orc
location 'file:///home/cloudera/local/mytable'
;

...
import org.apache.hadoop.io.Text;
...

  @Override
  public Object deserialize(Writable blob) throws SerDeException {

    Text t = (Text) blob;
  ...

CREATE EXTERNAL TABLE my_fact_orc
(
  mycol STRING,
  mystring INT
)
PARTITIONED BY (dt string)
CLUSTERED BY (some_id) INTO 64 BUCKETS
STORED AS ORC
LOCATION 's3://dev/my_fact_orc'
TBLPROPERTIES ('orc.compress'='SNAPPY');

ALTER TABLE my_fact_orc ADD IF NOT EXISTS PARTITION (dt='2017-09-07') LOCATION 's3://dev/my_fact_orc/dt=2017-09-07';

ALTER TABLE my_fact_orc PARTITION (dt='2017-09-07') SET FILEFORMAT ORC;

SELECT * FROM my_fact_orc WHERE dt='2017-09-07' LIMIT 5;