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Posted to dev@hive.apache.org by "Carl Steinbach (JIRA)" <ji...@apache.org> on 2011/06/30 21:22:28 UTC
[jira] [Commented] (HIVE-1815) The class HiveResultSet should
implement batch fetching.
[ 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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