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From "Mich Talebzadeh" <m...@peridale.co.uk>
Subject configuring Hive metastore to use Oracle DB ignored
Date Mon, 09 Mar 2015 09:27:44 GMT
Hi all,

 

I am trying to use an Oracle DB as the metastore for Hive.

 

I have create all the users and connections, added Oracle jar file
ojdbc6.jar to /usr/lib/hive/lib. I have also renamed the derby jar file
derby-10.10.1.1.jar to derby-10.10.1.1.jar_ori so it does not use the
embedded Derby database!

 

I have written a simple JDBC connection Java to confirm that I can connect
from hive home to Oracle. They both happen to be on the same host rhes564.

 

In my $HIVE_HOME/conf, I have added the following properties to
hive-site.xml file

 

<property>

  <name>javax.jdo.option.ConnectionURL</name>

  <value>jdbc:oracle:thin:@rhes564:1521:mydb</value>

</property>

<property>

  <name>javax.jdo.option.ConnectionDriverName</name>

  <value>oracle.jdbc.OracleDriver</value>

</property>

<property>

  <name>javax.jdo.option.ConnectionUserName</name>

  <value>hiveuser</value>

</property>

 

<property>

  <name>javax.jdo.option.ConnectionPassword</name>

  <value>hiveuser</value>

</property>

 

Now I have also changed thrift port to be 10010 in hive-site.xml just to see
if the startup uses this port

 

    <name>hive.server2.thrift.port</name>

    <value>10010</value>

    <description>Port number of HiveServer2 Thrift interface when
hive.server2.transport.mode is 'binary'.</description>

  </property>

 

Now when I go back and try starting metastore API as follows

 

hiveserver2 --service metastore &

[5]     4169

hduser@rhes564::/usr/lib/hive/bin> Starting Hive Metastore Server

SLF4J: Class path contains multiple SLF4J bindings.

SLF4J: Found binding in
[jar:file:/home/hduser/hadoop/hadoop-2.6.0/share/hadoop/common/lib/slf4j-log
4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in
[jar:file:/usr/lib/hive/lib/hive-jdbc-0.14.0-standalone.jar!/org/slf4j/impl/
StaticLoggerBinder.class]

SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.

SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]

javax.jdo.JDOFatalInternalException: Error creating transactional connection
factory

Caused by: org.datanucleus.exceptions.NucleusException: Attempt to invoke
the "BONECP" plugin to create a ConnectionPool gave an error : The specified
datastore driver ("org.apache.derby.jdbc.EmbeddedDriver") was not found in
the CLASSPATH. Please check your CLASSPATH specification, and the name of
the driver.

 

 

OK I have renamed derby jar file deliberately. However, why is still looking
for embedded driver. Why does not it connect to Oracle metastore? Am I
missing something from hive-site.xml file? 

 

Thanks,

 

Mich

 

 

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