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https://issues.apache.org/jira/browse/HIVE-675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12898830#action_12898830
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HBase Review Board commented on HIVE-675:
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Message from: "Carl Steinbach" <c...@cloudera.com>

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http://review.cloudera.org/r/508/
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(Updated 2010-08-16 02:05:39.708868)


Review request for Hive Developers.


Changes
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Updated diff with 
https://issues.apache.org/jira/secure/attachment/12419726/hive-675-2009-9-16.patch


Summary
-------

Database/Scheme support for Hive.

* Implemented 'SHOW DATABASES' command
* Refactored TestHiveMetaStore and enabled tests for remote metastore client.
* Added launch configurations for TestHiveMetaStore and TestHiveMetaStoreRemote


This addresses bug HIVE-675.
    http://issues.apache.org/jira/browse/HIVE-675


Diffs (updated)
-----

  .gitignore 376cdc6 
  build-common.xml d4ff895 
  eclipse-templates/TestEmbeddedHiveMetaStore.launchtemplate PRE-CREATION 
  eclipse-templates/TestHive.launchtemplate 24efc12 
  eclipse-templates/TestRemoteHiveMetaStore.launchtemplate PRE-CREATION 
  metastore/if/hive_metastore.thrift 478d0af 
  metastore/src/gen-cpp/ThriftHiveMetastore.h e2538fb 
  metastore/src/gen-cpp/ThriftHiveMetastore.cpp f945a3a 
  metastore/src/gen-cpp/ThriftHiveMetastore_server.skeleton.cpp ed2bb99 
  metastore/src/gen-cpp/hive_metastore_types.h 1b0c706 
  metastore/src/gen-cpp/hive_metastore_types.cpp b5a403d 
  metastore/src/gen-javabean/org/apache/hadoop/hive/metastore/api/Database.java 
78c78d9 
  
metastore/src/gen-javabean/org/apache/hadoop/hive/metastore/api/ThriftHiveMetastore.java
 25408d9 
  metastore/src/gen-php/ThriftHiveMetastore.php ea4add5 
  metastore/src/gen-php/hive_metastore_types.php 61872a0 
  metastore/src/gen-py/hive_metastore/ThriftHiveMetastore-remote fc06cba 
  metastore/src/gen-py/hive_metastore/ThriftHiveMetastore.py 4a0bc67 
  metastore/src/gen-py/hive_metastore/ttypes.py ea7269e 
  metastore/src/java/org/apache/hadoop/hive/metastore/HiveAlterHandler.java 
39dbd52 
  metastore/src/java/org/apache/hadoop/hive/metastore/HiveMetaStore.java 
4fb296a 
  metastore/src/java/org/apache/hadoop/hive/metastore/HiveMetaStoreClient.java 
c6541af 
  metastore/src/java/org/apache/hadoop/hive/metastore/IMetaStoreClient.java 
6013644 
  metastore/src/java/org/apache/hadoop/hive/metastore/MetaStoreUtils.java 
0818689 
  metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java a06384c 
  metastore/src/java/org/apache/hadoop/hive/metastore/RawStore.java 4951bd6 
  metastore/src/java/org/apache/hadoop/hive/metastore/Warehouse.java 4488f94 
  metastore/src/model/org/apache/hadoop/hive/metastore/model/MDatabase.java 
b3e098d 
  metastore/src/model/package.jdo 206ba75 
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestEmbeddedHiveMetaStore.java
 PRE-CREATION 
  metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStore.java 
fff6aad 
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestHiveMetaStoreRemote.java
 bc950b9 
  
metastore/src/test/org/apache/hadoop/hive/metastore/TestRemoteHiveMetaStore.java
 PRE-CREATION 
  ql/src/java/org/apache/hadoop/hive/ql/exec/DDLTask.java ef1da6b 
  ql/src/java/org/apache/hadoop/hive/ql/exec/MoveTask.java d59f48c 
  ql/src/java/org/apache/hadoop/hive/ql/metadata/Hive.java e0761fc 
  ql/src/java/org/apache/hadoop/hive/ql/metadata/Table.java 3300e2a 
  ql/src/java/org/apache/hadoop/hive/ql/parse/BaseSemanticAnalyzer.java eedf9e3 
  ql/src/java/org/apache/hadoop/hive/ql/parse/DDLSemanticAnalyzer.java 1801c10 
  ql/src/java/org/apache/hadoop/hive/ql/parse/Hive.g b080780 
  ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java 682a8b5 
  ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzerFactory.java 
6af3b17 
  ql/src/java/org/apache/hadoop/hive/ql/plan/CreateDatabaseDesc.java 
PRE-CREATION 
  ql/src/java/org/apache/hadoop/hive/ql/plan/DDLWork.java ed4ed22 
  ql/src/java/org/apache/hadoop/hive/ql/plan/DropDatabaseDesc.java PRE-CREATION 
  ql/src/java/org/apache/hadoop/hive/ql/plan/ShowDatabasesDesc.java 
PRE-CREATION 
  ql/src/java/org/apache/hadoop/hive/ql/plan/SwitchDatabaseDesc.java 
PRE-CREATION 
  ql/src/test/org/apache/hadoop/hive/ql/QTestUtil.java b4651a2 
  ql/src/test/org/apache/hadoop/hive/ql/metadata/TestHive.java ab39ca4 
  ql/src/test/org/apache/hadoop/hive/ql/metadata/TestHiveMetaStoreChecker.java 
26cc71a 
  ql/src/test/queries/clientnegative/database_create_already_exists.q 
PRE-CREATION 
  ql/src/test/queries/clientnegative/database_create_invalid_name.q 
PRE-CREATION 
  ql/src/test/queries/clientnegative/database_drop_does_not_exist.q 
PRE-CREATION 
  ql/src/test/queries/clientnegative/database_drop_not_empty.q PRE-CREATION 
  ql/src/test/queries/clientnegative/database_switch_does_not_exist.q 
PRE-CREATION 
  ql/src/test/queries/clientpositive/add_part_exist.q 54d0096 
  ql/src/test/queries/clientpositive/alter1.q 6f95685 
  ql/src/test/queries/clientpositive/alter2.q 2388e21 
  ql/src/test/queries/clientpositive/alter3.q d9d3b07 
  ql/src/test/queries/clientpositive/alter4.q 35fa441 
  ql/src/test/queries/clientpositive/database.q PRE-CREATION 
  ql/src/test/queries/clientpositive/rename_column.q ce82ff7 
  ql/src/test/results/clientnegative/database_create_already_exists.q.out 
PRE-CREATION 
  ql/src/test/results/clientnegative/database_create_invalid_name.q.out 
PRE-CREATION 
  ql/src/test/results/clientnegative/database_drop_does_not_exist.q.out 
PRE-CREATION 
  ql/src/test/results/clientnegative/database_drop_not_empty.q.out PRE-CREATION 
  ql/src/test/results/clientnegative/database_switch_does_not_exist.q.out 
PRE-CREATION 
  ql/src/test/results/clientpositive/add_part_exist.q.out 4bcdf8a 
  ql/src/test/results/clientpositive/alter1.q.out ea143a6 
  ql/src/test/results/clientpositive/alter2.q.out 6de5f19 
  ql/src/test/results/clientpositive/alter3.q.out 2a1f4d5 
  ql/src/test/results/clientpositive/alter4.q.out da7cd9a 
  ql/src/test/results/clientpositive/database.q.out PRE-CREATION 
  ql/src/test/results/clientpositive/rename_column.q.out 8d5da8d 

Diff: http://review.cloudera.org/r/508/diff


Testing
-------


Thanks,

Carl




> add database/schema support Hive QL
> -----------------------------------
>
>                 Key: HIVE-675
>                 URL: https://issues.apache.org/jira/browse/HIVE-675
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Metastore, Query Processor
>            Reporter: Prasad Chakka
>            Assignee: Carl Steinbach
>             Fix For: 0.6.0, 0.7.0
>
>         Attachments: hive-675-2009-9-16.patch, hive-675-2009-9-19.patch, 
> hive-675-2009-9-21.patch, hive-675-2009-9-23.patch, hive-675-2009-9-7.patch, 
> hive-675-2009-9-8.patch, HIVE-675-2010-08-16.patch.txt, 
> HIVE-675-2010-7-16.patch.txt, HIVE-675-2010-8-4.patch.txt
>
>
> Currently all Hive tables reside in single namespace (default). Hive should 
> support multiple namespaces (databases or schemas) such that users can create 
> tables in their specific namespaces. These name spaces can have different 
> warehouse directories (with a default naming scheme) and possibly different 
> properties.
> There is already some support for this in metastore but Hive query parser 
> should have this feature as well.

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