[jira] [Created] (HIVE-18852) Misleading error message in alter table validation

[Dan Burkert (JIRA)]

Dan Burkert created HIVE-18852:
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             Summary: Misleading error message in alter table validation
                 Key: HIVE-18852
                 URL: https://issues.apache.org/jira/browse/HIVE-18852
             Project: Hive
          Issue Type: Bug
          Components: Metastore
    Affects Versions: 2.4.0
            Reporter: Dan Burkert


The metastore's validation error message when attempting to rename a table to a 
non-existent database is wrong.  For instance, attempting to alter table 
'db.table' to 'non_existent_database.table' results in the Thrift error:

{{TException - service has thrown: InvalidOperationException(message=Unable to 
change partition or table. Database db does not exist Check metastore logs for 
detailed stack.non_existent_database)}}

I believe the offending line of code is 
[here|https://github.com/apache/hive/blob/branch-2/metastore/src/java/org/apache/hadoop/hive/metastore/HiveAlterHandler.java?utf8=%E2%9C%93#L331-L333],
 notice that {{dbname}} is used in the message, not {{newDbName}}.  I don't 
know if switching that would cause the case of a non-existing {{dbname}} case 
to regress, though.



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