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From "rohithsharma (JIRA)" <>
Subject [jira] [Created] (HIVE-3469) When new hive cluster is started, hive jdbc client hangs.
Date Sat, 15 Sep 2012 08:58:07 GMT
rohithsharma created HIVE-3469:

             Summary: When new hive cluster is started, hive jdbc client hangs.
                 Key: HIVE-3469
             Project: Hive
          Issue Type: Bug
          Components: Clients, Metastore, Thrift API
         Environment: Hadoop-2.0.1 + Hive-0.9.0
            Reporter: rohithsharma

The scenario is as follows  : 
For the new hive cluster , when multiple hive client is getting the connection for hive server
, there are 3 problems in metastore , hive client.
1. Since the derby is booted at first connection,  multiple client try to create database.One
of the client succeed and another one throw exception because of *unique primary constraint*
in metatables.

2. Once the Runtime exception is throw, the hive client which is made connection request will
hang forever.

3. Potentially "ConcurrentModificationException" is thrown by JDOQuery.

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