Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-12248

The rawStore used in DBTokenStore should be thread-safe

    XMLWordPrintableJSON

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Authentication
    • Labels:
      None

      Description

      A non-thread-safe implementation of RawStore, particularly ObjectStore, set in DBTokenStore is being shared by multi-threads, which causes the race condition in DataNuclues to access the backend DB.
      The DN PersistenceManager(PM) in ObjectStore is not thread safe, so DBTokenStore should use a ThreadLocal ObjectStore.
      Following errors might be root caused by the race condition in DN PM.

      Object of type "org.apache.hadoop.hive.metastore.model.MDelegationToken" is detached. Detached objects cannot be used with this operation.
      org.datanucleus.exceptions.ObjectDetachedException: Object of type "org.apache.hadoop.hive.metastore.model.MDelegationToken" is detached. Detached objects cannot be used with this operation.
      at org.datanucleus.ExecutionContextImpl.assertNotDetached(ExecutionContextImpl.java:5728)
      at org.datanucleus.ExecutionContextImpl.retrieveObject(ExecutionContextImpl.java:1859)
      at org.datanucleus.ExecutionContextThreadedImpl.retrieveObject(ExecutionContextThreadedImpl.java:203)
      at org.datanucleus.api.jdo.JDOPersistenceManager.jdoRetrieve(JDOPersistenceManager.java:605)
      at org.datanucleus.api.jdo.JDOPersistenceManager.retrieveAll(JDOPersistenceManager.java:693)
      at org.datanucleus.api.jdo.JDOPersistenceManager.retrieveAll(JDOPersistenceManager.java:713)
      at org.apache.hadoop.hive.metastore.ObjectStore.getAllTokenIdentifiers(ObjectStore.java:6517) 
      

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                ctang Chaoyu Tang
                Reporter:
                ctang Chaoyu Tang
              • Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: