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From "Carl Steinbach (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-1815) The class HiveResultSet should implement batch fetching.
Date Thu, 30 Jun 2011 19:22:28 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13058011#comment-13058011
] 

Carl Steinbach commented on HIVE-1815:
--------------------------------------

Committed as HIVE-1851.


> The class HiveResultSet should implement batch fetching.
> --------------------------------------------------------
>
>                 Key: HIVE-1815
>                 URL: https://issues.apache.org/jira/browse/HIVE-1815
>             Project: Hive
>          Issue Type: Improvement
>          Components: JDBC
>    Affects Versions: 0.8.0
>         Environment: Custom Java application using the Hive JDBC driver to connect to
a Hive server, execute a Hive query and process the results.
>            Reporter: Guy le Mar
>            Assignee: Bennie Schut
>             Fix For: 0.8.0
>
>         Attachments: HIVE-1815.1.patch.txt, HIVE-1815.2.patch.txt
>
>
> When using the Hive JDBC driver, you can execute a Hive query and obtain a HiveResultSet
instance that contains the results of the query.
> Unfortunately, HiveResultSet can then only fetch a single row of these results from the
Hive server at a time. As a consequence, it's extremely slow to fetch a resultset of anything
other than a trivial size.
> It would be nice for the HiveResultSet to be able to fetch N rows from the server at
a time, so that performance is suitable to support applications that provide human interaction.

> (From memory, I think it took me around 20 minutes to fetch 4000 rows.)

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