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From "Vitalii Diravka (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-6145) Implement Hive MapR-DB JSON handler.
Date Thu, 08 Feb 2018 14:25:00 GMT
Vitalii Diravka created DRILL-6145:
--------------------------------------

             Summary: Implement Hive MapR-DB JSON handler. 
                 Key: DRILL-6145
                 URL: https://issues.apache.org/jira/browse/DRILL-6145
             Project: Apache Drill
          Issue Type: Bug
          Components: Storage - Hive, Storage - MapRDB
    Affects Versions: 1.12.0
            Reporter: Vitalii Diravka
            Assignee: Vitalii Diravka
             Fix For: 1.13.0


Similar to "hive-hbase-storage-handler" to support querying MapR-DB Hive's external tables
it is necessary to add "hive-maprdb-json-handler".

Use case:

 # Create a table MapR-DB JSON table:
{code}
_> mapr dbshell_

_maprdb root:> create /tmp/table/json_  (make sure /tmp/table exists)
{code}
-- insert data
{code}
insert /tmp/table/json --value '\{"_id":"movie0000002" , "title":"Developers on the Edge",
"studio":"Command Line Studios"}'

insert /tmp/table/json --id movie0000003 --value '\{"title":"The Golden Master", "studio":"All-Nighter"}'

{code} 
 #  Create a Hive external table:
{code}
CREATE EXTERNAL TABLE mapr_db_json_hive_tbl ( 
movie_id string, title string, studio string) 
STORED BY 'org.apache.hadoop.hive.maprdb.json.MapRDBJsonStorageHandler' 
TBLPROPERTIES("maprdb.table.name" = "/tmp/table/json","maprdb.column.id" = "movie_id");
{code}
 
 #  Use hive schema to query this table:
{code}
select * from hive.mapr_db_json_hive_tbl;
{code}



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