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From "Bing Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10982) Customizable the value of java.sql.statement.setFetchSize in Hive JDBC Driver
Date Thu, 03 Dec 2015 03:36:11 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15037192#comment-15037192
] 

Bing Li commented on HIVE-10982:
--------------------------------

Re-submitted the patch, but I still can't see it in http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/.
Will re-check later.

> Customizable the value of  java.sql.statement.setFetchSize in Hive JDBC Driver
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-10982
>                 URL: https://issues.apache.org/jira/browse/HIVE-10982
>             Project: Hive
>          Issue Type: Improvement
>          Components: JDBC
>    Affects Versions: 1.2.0, 1.2.1
>            Reporter: Bing Li
>            Assignee: Bing Li
>            Priority: Critical
>         Attachments: HIVE-10982.1.patch, HIVE-10982.2.patch
>
>
> The current JDBC driver for Hive hard-code the value of setFetchSize to 50, which will
be a bottleneck for performance.
> Pentaho filed this issue as  http://jira.pentaho.com/browse/PDI-11511, whose status is
open.
> Also it has discussion in http://forums.pentaho.com/showthread.php?158381-Hive-JDBC-Query-too-slow-too-many-fetches-after-query-execution-Kettle-Xform
> http://mail-archives.apache.org/mod_mbox/hive-user/201307.mbox/%3CCACQ46vEVGrfqG5rWXNr1PSgYz7dcF07mvLo8MM2qiT3ANM1XvQ@mail.gmail.com%3E



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