The error is printed on the console when I am trying to start the remotestore server.
On 09-2-9 上午10:43, "Prasad Chakka" <[email protected]> wrote: > Where are you getting this error? In the Hive’s log or Hive Metastor’s log? > Did you start the remote metastore server? > > > > From: Yongqiang He <[email protected]> > Reply-To: <[email protected]> > Date: Sun, 8 Feb 2009 18:40:52 -0800 > To: <[email protected]> > Subject: Re: Why hive interact with the metastore through thrift? > > Thanks, here are what I did: > 1)check the chuck > 2) ant package (should I use ant deploy here?) > 3) modify the conf file with remote metastore > 4) start hive > > On 09-2-9 上午10:36, "Prasad Chakka" <[email protected]> wrote: > >> It is trying to find jpox enhanced classes and it is not finding any or the >> classes weren’t enhanced. Something wrong with the distribution you are using >> or you didn’t compile correctly. How are you getting this error? >> >> >> >> From: Yongqiang He <[email protected]> >> Reply-To: <[email protected]> >> Date: Sun, 8 Feb 2009 18:33:26 -0800 >> To: <[email protected]> >> Subject: Re: Why hive interact with the metastore through thrift? >> >> I found the thrift definition using command “find . -name *.thrift” . >> >> But what’s wrong the remote metastore error? >> >> On 09-2-7 下午5:07, "He Yongqiang" <[email protected]> wrote: >> >>> I see, Mtable and MStorageDescriptor both own a map named parameters, so we >>> can add new key,val pairs by putting into the parameters map. The >>> parameters map will be persisted as part of MTable, is that right? >>> >>> We actually may need to add new meta objects into the system, for example, >>> we want to distribute data ourselves and record some distribution >>> information. Avoiding to confuse the Mtable, MStorageDescriptor and >>> MFieldSchema, these newly added info should be separated. >>> Since the metadata access is through thrift, we need to work on this in the >>> thrift way. Where I can get started for this? Where is the thrift-related >>> definition? >>> >>> By the way, I have trouble in running the remote metastore with mysql, here >>> is the error msg: >>> org.jpox.jdo.exceptions.ClassNotPersistenceCapableException: The class "The >>> class "org.apache.hadoop.hive.metastore.model.MDatabase" is not persistable. >>> This means that it either hasnt been enhanced, or that the enhanced version >>> of the file is not in the CLASSPATH (or is hidden by an unenhanced version), >>> or the Meta-Data/annotations for the class are not found." is not >>> persistable. This means that it either hasnt been enhanced, or that the >>> enhanced version of the file is not in the CLASSPATH (or is hidden by an >>> unenhanced version), or the Meta-Data for the class is not found. >>> at >>> org.jpox.jdo.JPOXJDOHelper.getJDOExceptionForJPOXException(JPOXJDOHelper.jav >>> a:255) >>> at >>> org.jpox.jdo.AbstractPersistenceManager.jdoMakePersistent(AbstractPersistenc >>> eManager.java:671) >>> at >>> org.jpox.jdo.AbstractPersistenceManager.makePersistent(AbstractPersistenceMa >>> nager.java:691) >>> at >>> org.apache.hadoop.hive.metastore.ObjectStore.createDatabase(ObjectStore.java >>> :272) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(Hi >>> veMetaStore.java:145) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore >>> .java:115) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.<init>(HiveMetaSto >>> re.java:94) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore.main(HiveMetaStore.java:625) >>> NestedThrowablesStackTrace: >>> The class "org.apache.hadoop.hive.metastore.model.MDatabase" is not >>> persistable. This means that it either hasnt been enhanced, or that the >>> enhanced version of the file is not in the CLASSPATH (or is hidden by an >>> unenhanced version), or the Meta-Data/annotations for the class are not >>> found. >>> org.jpox.exceptions.ClassNotPersistableException: The class >>> "org.apache.hadoop.hive.metastore.model.MDatabase" is not persistable. This >>> means that it either hasnt been enhanced, or that the enhanced version of >>> the file is not in the CLASSPATH (or is hidden by an unenhanced version), or >>> the Meta-Data/annotations for the class are not found. >>> at >>> org.jpox.ObjectManagerImpl.assertClassPersistable(ObjectManagerImpl.java:362 >>> 7) >>> at >>> org.jpox.ObjectManagerImpl.persistObjectInternal(ObjectManagerImpl.java:1135>>> ) >>> at >>> org.jpox.ObjectManagerImpl.persistObject(ObjectManagerImpl.java:1077) >>> at >>> org.jpox.jdo.AbstractPersistenceManager.jdoMakePersistent(AbstractPersistenc >>> eManager.java:666) >>> at >>> org.jpox.jdo.AbstractPersistenceManager.makePersistent(AbstractPersistenceMa >>> nager.java:691) >>> at >>> org.apache.hadoop.hive.metastore.ObjectStore.createDatabase(ObjectStore.java >>> :272) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(Hi >>> veMetaStore.java:145) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore >>> .java:115) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.<init>(HiveMetaSto >>> re.java:94) >>> at >>> org.apache.hadoop.hive.metastore.HiveMetaStore.main(HiveMetaStore.java:625) >>> >>> What I missed? >>> Thanks very much. >>> >>> On 09-2-7 下午1:47, "Prasad Chakka" <[email protected]> wrote: >>> >>>> What kind of data do you want to add? >>>> >>>> You can add arbitrary key, val pairs to table & sd metadata objects right >>>> now. It is a little bit of work If you want to add new objects. >>>> >>>> >>>> From: Yongqiang He <[email protected]> >>>> Reply-To: <[email protected]> >>>> Date: Fri, 6 Feb 2009 21:41:13 -0800 >>>> To: <[email protected]> >>>> Subject: Re: Why hive interact with the metastore through thrift? >>>> >>>> Ok. Thanks. >>>> What should I do if I want to extend the hive metadata, for example adding >>>> some fields to table/database schema or adding new meta types? -- Best regards! He Yongqiang Email: [email protected] Tel: 86-10-62600969(O) Fax：86-10-626000900 Key Laboratory of Network Science and Technology/ Research Center for Grid and Service Computing, Institute of Computing Technology, Chinese Academy of Sciences, No.3 Kexueyuan South Road, Beijing 100190, China
