[teiid-issues] [JBoss JIRA] (TEIID-3580) Hive 0.13.1 JDBC jars makes queries run slow
Vijay Bhaskar Chintalapati (JIRA)
issues at jboss.org
Tue Jul 21 16:56:02 EDT 2015
[ https://issues.jboss.org/browse/TEIID-3580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13091494#comment-13091494 ]
Vijay Bhaskar Chintalapati commented on TEIID-3580:
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Very interesting Steven! I executed the query "SELECT g_0.code, g_0.description, g_0.total_emp, g_0.salary FROM sample_07 AS g_0" from the web app and its taking the same 20 seconds to return. I run the same query from a standalone JDBC project and the delay is the same : 20+ second. Whats your guess about what is happening ?
I run the same query against Hive 1.2.0 using the Hive 1.2.0 jars and the query returns in less than a second.
So it safe to assume that the culprit is somewhere in the jars ?
> Hive 0.13.1 JDBC jars makes queries run slow
> --------------------------------------------
>
> Key: TEIID-3580
> URL: https://issues.jboss.org/browse/TEIID-3580
> Project: Teiid
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: 8.7.3
> Reporter: Debbie Steigner
> Assignee: Steven Hawkins
> Attachments: threaddump-1437508266001.tdump
>
>
> When using the JDBC jars for Hive 0.13.1 running on HDP 2.1, queries executed against table 'default.sample_07' takes approximately 20-30 seconds to return.
> The Hive JDBC jars for version 0.13.1 can be found here :
> https://github.com/vchintal/hive-jdbc-jars-archive
> Alternatively a ready-to-go modules can be downloaded from here for testing:
> https://drive.google.com/file/d/0BxJhoZ1V34QHSmgzTlBRVktZaGM/
> Use the following driver snippet when using the above mentioned module:
> <driver name="hive" module="org.apache.hadoop.hive:0.13.1">
> <driver-class>org.apache.hive.jdbc.HiveDriver</driver-class>
> </driver>
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