Thank you, Prasad. It works now after I point HIVE_HOME to hive/build/dist. I pointed HIVE_HOME to hive not hive/build/dist.
On 09-2-9 上午10:48, "Prasad Chakka" <[email protected]> wrote: > What is the classpath and how did you build hive_metastore.jar? > > > > From: Yongqiang He <[email protected]> > Reply-To: <[email protected]> > Date: Sun, 8 Feb 2009 18:45:46 -0800 > To: <[email protected]> > Subject: Re: Why hive interact with the metastore through thrift? > > 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.ja >>>> va:255) >>>> at >>>> org.jpox.jdo.AbstractPersistenceManager.jdoMakePersistent(AbstractPersisten >>>> ceManager.java:671) >>>> at >>>> org.jpox.jdo.AbstractPersistenceManager.makePersistent(AbstractPersistenceM >>>> anager.java:691) >>>> at >>>> org.apache.hadoop.hive.metastore.ObjectStore.createDatabase(ObjectStore.jav >>>> a:272) >>>> at >>>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(H >>>> iveMetaStore.java:145) >>>> at >>>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStor >>>> e.java:115) >>>> at >>>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.<init>(HiveMetaSt >>>> ore.java:94) >>>> at >>>> org.apache.hadoop.hive.metastore.HiveMetaStore.main(HiveMetaStore.java:625) >>>> NestedThrowablesStackTrace: >>>> The class "org.apache.hadoop.hive.metastore.model.MDatabase" is not >>>> persistable. This means that it either hasnt been enhanced, or that the >>>> enhanced version of the file is not in the CLASSPATH (or is hidden by an >>>> unenhanced version), or the Meta-Data/annotations for the class are not >>>> found. >>>> org.jpox.exceptions.ClassNotPersistableException: The class >>>> "org.apache.hadoop.hive.metastore.model.MDatabase" is not persistable. This >>>> means that it either hasnt been enhanced, or that the enhanced version of >>>> the file is not in the CLASSPATH (or is hidden by an unenhanced version), >>>> or the Meta-Data/annotations for the class are not found. >>>> at >>>> org.jpox.ObjectManagerImpl.assertClassPersistable(ObjectManagerImpl.java:36 >>>> 27) >>>> at >>>> org.jpox.ObjectManagerImpl.persistObjectInternal(ObjectManagerImpl.java:113 >>>> 5) >>>> at >>>> org.jpox.ObjectManagerImpl.persistObject(ObjectManagerImpl.java:1077) >>>> at >>>> org.jpox.jdo.AbstractPersistenceManager.jdoMakePersistent(AbstractPersisten >>>> ceManager.java:666) >>>> at >>>> org.jpox.jdo.AbstractPersistenceManager.makePersistent(AbstractPersistenceM >>>> anager.java:691) >>>> at >>>> org.apache.hadoop.hive.metastore.ObjectStore.createDatabase(ObjectStore.jav >>>> a:272) >>>> at >>>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(H >>>> iveMetaStore.java:145) >>>> at >>>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStor >>>> e.java:115) >>>> at >>>> org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.<init>(HiveMetaSt >>>> ore.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
