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From "Ashutosh Chauhan (JIRA)" <>
Subject [jira] [Commented] (HIVE-4299) exported metadata by HIVE-3068 cannot be imported because of wrong file name
Date Fri, 26 Jul 2013 21:31:49 GMT


Ashutosh Chauhan commented on HIVE-4299:

I guess you have tested it manually on cluster, so skipping unit tests should be alright.

Although, I think it will be better to do:
+  public static final String METADATA_NAME=".metadata";
instead of 
+  public static final String METADATA_NAME="_metadata";

because some folks may have already exported the data, which cannot be imported with your
change but can be if we choose former instead.
> exported metadata by HIVE-3068 cannot be imported because of wrong file name
> ----------------------------------------------------------------------------
>                 Key: HIVE-4299
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.11.0
>            Reporter: Sho Shimauchi
>            Assignee: Sho Shimauchi
>         Attachments: HIVE-4299.1.patch.txt, HIVE-4299.patch
> h2. Symptom
> When DROP TABLE a table, metadata of the table is generated to be able to import the
dropped table again.
> However, the exported metadata name is '<table name>.metadata'.
> Since ImportSemanticAnalyzer allows only '_metadata' as metadata filename, user have
to rename the metadata file to import the table.
> h2. How to reproduce
> Set the following setting to hive-site.xml:
> {code}
>  <property>
>    <name>hive.metastore.pre.event.listeners</name>
>    <value>org.apache.hadoop.hive.ql.parse.MetaDataExportListener</value>
>  </property>
> {code}
> Then run the following queries:
> {code}
> > CREATE TABLE test_table (id INT, name STRING);
> > DROP TABLE test_table;
> > IMPORT TABLE test_table_imported FROM '/path/to/metadata/file';
> FAILED: SemanticException [Error 10027]: Invalid path
> {code}

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