On Wed, Dec 8, 2010 at 12:06 PM, Ning Zhang <nzh...@fb.com> wrote: > These are datanucleus paramesters found in hive-default.xml/hive-site.xml. If > you change them to the following the metastore schema won't be changed > automatically (may be good for preventing accidents). > > > <property> > <name>datanucleus.autoCreateSchema</name> > <value>false</value> > </property> > > <property> > <name>datanucleus.fixedDatastore</name> > <value>true</value> > </property> > > > ________________________________________ > From: Edward Capriolo [edlinuxg...@gmail.com] > Sent: Wednesday, December 08, 2010 7:19 AM > To: user@hive.apache.org > Cc: <hive-u...@hadoop.apache.org> > Subject: Re: Safe to upgrade to Hive 0.7.0? > > On Wed, Dec 8, 2010 at 9:55 AM, Ryan LeCompte <lecom...@gmail.com> wrote: >> Hey guys, >> We would like to experiment with some of the features in the current trunk >> (0.7) release. Do you think at this point it's nearing "production-ready" ? >> Are there any metastore migration scripts or anything like that before >> upgrading to 0.7 from 0.6? >> Thanks, >> Ryan >> > > Ryan, > > This is hard to say. There are many changes going in around indexing > and authorization. IMHO everyone is taking a lot of care in the design > however, it is still subject to change. > > If i were compelled to update I would spin up a new instance into a > new meta-store back end. Then compare the schema of current with 0.6.X > like a diff of 'show create tables'. > > Just an FYI. I applied two different hive trunks between 0.5 and 0.6. > and I never needed the update scripts because hive happily updated the > schema for me. After my final upgrade to 0.7.0 I re-ran everything in > the upgrade script just to be safe. Nothing noticeably bad happened to > me during the duration. > > I suspect many people will not need to run the update scripts since in > the stock configuration hive seems to auto-update anyway. (Someone > correct me if I am wrong here.) Does anyone know how to specifically > which variable controls this? > > Edward >
https://issues.apache.org/jira/browse/HIVE-1841 -- please comment
