Hi Huang, According to the picture you want to start 2 HiveServer2 instances both with embedded metastore, where the metastore db is stored in the same RDBMS in a different database.
This is certainly possible. You have to set the database options according to this: https://cwiki.apache.org/confluence/display/Hive/AdminManual+MetastoreAdmin#AdminManualMetastoreAdmin-RemoteMetastoreDatabase <https://cwiki.apache.org/confluence/display/Hive/AdminManual+MetastoreAdmin#AdminManualMetastoreAdmin-RemoteMetastoreDatabase> You have to set the metastore options according to this: https://cwiki.apache.org/confluence/display/Hive/AdminManual+MetastoreAdmin#AdminManualMetastoreAdmin-Local/EmbeddedMetastoreServer <https://cwiki.apache.org/confluence/display/Hive/AdminManual+MetastoreAdmin#AdminManualMetastoreAdmin-Local/EmbeddedMetastoreServer> Hope this helps, Peter > On Oct 26, 2016, at 4:48 AM, Huang Meilong <ims...@outlook.com> wrote: > > Look at this local metastore architecture: > > <pastedImage.png> > > If I set different database name in javax.jdo.option.ConnectionURL, say, > "jdbc:mysql://xxxxx/hivemeta_1?createDatabaseIfNotExist=true&characterEncoding=UTF-8" > and > "jdbc:mysql://xxxxx/hivemeta_2?createDatabaseIfNotExist=true&characterEncoding=UTF-8", > will the to metastore services work fine? > > In short, I want to use the same RDBMS database for the two hive metastore > services, and the meta data is isolated form each other. How can I achieve > that? > > > > 发件人: Peter Vary <pv...@cloudera.com> > 发送时间: 2016年10月26日 0:49 > 收件人: user@hive.apache.org > 主题: Re: Can I specify database name in hive metastore service? > > Hi Huang, > Hive metastore is a component of the "Hive database". See: > https://cwiki.apache.org/confluence/display/Hive/Design > <https://cwiki.apache.org/confluence/display/Hive/Design> > The metastore uses traditional RDBMS to store "the structure information of > the various tables and partitions in the warehouse". The > javax.jdo.option.ConnectionURL and the javax.jdo.option.ConnectionDriverName > configuration options are used to access this RDBMS database. The > hive.metastore.uris is the endpoint where the metastore will communicate with > the other Hive components, like the HiveServer2. > So you can change the database name in the connectionUrl, which will change > only the database name where the metadata is stored in the relational > database and you can not add a database name to the thrift uri (metastore > uri) since HiveServer2 will use the same uri to access metadata regardless of > which Hive database is used by the client. > I hope this helps, > Peter > > 2016. okt. 25. 17:32 ezt írta ("Huang Meilong" <ims...@outlook.com > <mailto:ims...@outlook.com>>): > Hi, > > To use hive metastore service, I must set `javax.jdo.option.ConnectionURL`, > `javax.jdo.option.ConnectionDriverName` and `hive.metastore.uris` in > hive-site.xml, like this: > > <property> > <name>javax.jdo.option.ConnectionURL</name> > > <value>jdbc:mysql://xxxxx/hivemeta?createDatabaseIfNotExist=true&characterEncoding=UTF-8</value> > </property> > <property> > <name>javax.jdo.option.ConnectionDriverName</name> > <value>com.mysql.jdbc.Driver</value> > </property> > <property> > <name>hive.metastore.uris</name> > <value>thrift://xxx:9083</value> > </property> > > > I'm confused that can I change the database name (usually it's `hivemeta`) > for other names? > > If I changed the database name from `hivemeta` to `my_hivemeta`, can hive > metastore work? We can not specify database name in `hive.metastore.uris`, we > can only specify hostname and port of metastore service.
