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From "Prasad Chakka (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-126) Don't fetch information on Partitions from HDFS instead of MetaStore
Date Fri, 19 Dec 2008 12:57:44 GMT

    [ https://issues.apache.org/jira/browse/HIVE-126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12658078#action_12658078
] 

Prasad Chakka commented on HIVE-126:
------------------------------------

that code was needed when we have both the old and new code bases were operating against the
same data at the same time. but no longer needed can be safely removed. 

+1

> Don't fetch information on Partitions from HDFS instead of MetaStore
> --------------------------------------------------------------------
>
>                 Key: HIVE-126
>                 URL: https://issues.apache.org/jira/browse/HIVE-126
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Metastore
>            Reporter: Johan Oskarsson
>            Assignee: Johan Oskarsson
>             Fix For: 0.2.0
>
>         Attachments: HIVE-126.patch, HIVE-126.patch
>
>
> When investigating HIVE-91 an issue came up where the information on what partitions
a table contains is loaded by listing the directories in the table directory on HDFS. This
is then used to overrule what is in the MetaStore if any difference is found. 
> * Would it not be preferable if MetaStore is the one authority on what the table contains?
> * It will also be a major hassle (or impossible?) to retrieve this information from HDFS
with external tables that have non standard partition names (HIVE-91), such as: table/2008/01/08/portugal
where "2008/01/08" is one partition value and "portugal" is another.

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