Carl Steinbach wrote:
Hi Adarsh,
Hibernate will not work with Hive because Hibernate depends on the
ability to execute row-level insert, update and delete operations.
None of these operations are supported by Hive.
Carl
On Tue, Sep 21, 2010 at 3:18 AM, Bennie Schut <bsc...@ebuddy.com
<mailto:bsc...@ebuddy.com>> wrote:
Hi,
Not all jdbc calls are implemented. This would be one of them. I
don't think anyone tried to use hibernate with hive before,
probably because it's highly unlikely to work at this time since
it will produce sql which might not be understood by hive. In most
cases you want a pretty fine grain of control over the queries you
send to hive (or any other dwh system) for performance reasons so
I don't think it's something people are actively working on.
As an alternative you might want to look at the apache commons
dbcp for connection pooling. We used it for a while but stopped
using it because of some out of PermGen issues (which probably was
unrelated). We combined this with Spring Templates to make using
it pretty simple in our code.
Bennie.
-----Original Message-----
From: Adarsh Sharma [mailto:adarsh.sha...@orkash.com
<mailto:adarsh.sha...@orkash.com>]
Sent: Tuesday, September 21, 2010 11:52 AM
To: hive-u...@hadoop.apache.org <mailto:hive-u...@hadoop.apache.org>
Subject: Error while fetching Hive Metadata
Hi all,
Did anyone encounter with the following error while fetching meta
data
of Hive.
10/09/21 15:18:26 INFO connection.DriverManagerConnectionProvider:
Using
Hibernate built-in connection pool (not for production use!)
10/09/21 15:18:26 INFO connection.DriverManagerConnectionProvider:
Hibernate connection pool size: 10
10/09/21 15:18:26 INFO connection.DriverManagerConnectionProvider:
autocommit mode: false
10/09/21 15:18:26 INFO connection.DriverManagerConnectionProvider:
using
driver: org.apache.hadoop.hive.jdbc.HiveDriver at URL:
jdbc:hive://192.168.0.173:10000/default
<http://192.168.0.173:10000/default>
10/09/21 15:18:26 INFO connection.DriverManagerConnectionProvider:
connection properties: {user=hadoop, password=****}
Hive history
file=/tmp/root/hive_job_log_root_201009211518_1489326085.txt
10/09/21 15:18:26 INFO exec.HiveHistory: Hive history
file=/tmp/root/hive_job_log_root_201009211518_1489326085.txt
10/09/21 15:18:26 WARN cfg.SettingsFactory: Could not obtain
connection
metadata
java.sql.SQLException: Method not supported
at
org.apache.hadoop.hive.jdbc.HiveConnection.getAutoCommit(HiveConnection.java:201)
at
org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:112)
at
org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:72)
at
org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1823)
at
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1143)
at SelectClauseExample.main(SelectClauseExample.java:20)
I want to use Hive Metadata. can someone Please help me.
I use Hadoop-0.20.2 and Hive 0.7 trunk
Thanks
Hi Carl,
Thanks for your reply, we are only looking for select queries to execute
through Hibernate
So, Is it possible to connect Hive though Hibernate and perform some
select operations from Hibernate or not ?
Looking forward for U'r reply.
Thanks & Regards
Adarsh Sharma
