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From "Devender Yadav (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-4176) Dynamic Schema Discovery is not done in case of Drill- Hive
Date Wed, 09 Dec 2015 06:27:11 GMT
Devender Yadav  created DRILL-4176:
--------------------------------------

             Summary: Dynamic Schema Discovery is not done in case of Drill- Hive
                 Key: DRILL-4176
                 URL: https://issues.apache.org/jira/browse/DRILL-4176
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.3.0
            Reporter: Devender Yadav 


I am using hive with drill.

Storage Plugin info:

{
  "type": "hive",
  "enabled": true,
  "configProps": {
    "hive.metastore.uris": "",
    "javax.jdo.option.ConnectionURL": "jdbc:mysql://localhost:3306/metastore_hive",
    "javax.jdo.option.ConnectionDriverName": "com.mysql.jdbc.Driver",
    "javax.jdo.option.ConnectionUserName": "root",
    "javax.jdo.option.ConnectionPassword": "root",
    "hive.metastore.warehouse.dir": "/user/hive/warehouse",
    "fs.default.name": "file:///",
    "hive.metastore.sasl.enabled": "false"
  }
}
It's working fine for querying and all.

Then I wanted to check whether it automatically discover newly created tables in hive or not.

I started drill in embedded mode and used a particular database in hive using

use hive.testDB;
Here testDB is a database in Hive with tables t1 & t2. Then I queried:

show tables;
It gave me table names

t1 
t2
I created a table t3 in hive and again fired show tables; in Drill. It's still showing  t1
t2. After 5-10 min I fired  show tables; again and it's showing t1 t2 t3.

I think it should show t3 immediately after adding t3 in hive.

What can be reason for this behavior and how drill is handling it internally?



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