[teiid-issues] [JBoss JIRA] (TEIID-3580) Hive 0.13.1 JDBC jars makes queries run slow

[Vijay Bhaskar Chintalapati (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-3580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13091476#comment-13091476 ] 

Vijay Bhaskar Chintalapati commented on TEIID-3580:
---------------------------------------------------

Yes its the same data source used both by web app and Teiid together. The query is 'select * from HDP.sample_07'. HDP here is the Source Model I am exposing in the VDB. So there is no difference in query plan. Below is part of the server log:

EXECUTING CalculateCost

AFTER:
Access(groups=[HDP1.sample_07], props={SOURCE_HINT=null, MODEL_ID=Schema name=HDP1, nameInSource=null, uuid=mmuuid:004c32d9-8675-49cb-88ab-9d3635e08885, OUTPUT_COLS=[HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary], EST_CARDINALITY=-1.0})
  Project(groups=[HDP1.sample_07], props={PROJECT_COLS=[HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary], OUTPUT_COLS=[HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary], EST_CARDINALITY=-1.0})
    Source(groups=[HDP1.sample_07], props={OUTPUT_COLS=[HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary], EST_COL_STATS={HDP1.sample_07.code=[-1.0, -1.0], HDP1.sample_07.description=[-1.0, -1.0], HDP1.sample_07.total_emp=[-1.0, -1.0], HDP1.sample_07.salary=[-1.0, -1.0]}, EST_CARDINALITY=-1.0})


============================================================================
EXECUTING PlanSorts

AFTER:
Access(groups=[HDP1.sample_07])
  Project(groups=[HDP1.sample_07])
    Source(groups=[HDP1.sample_07])


============================================================================
EXECUTING CollapseSource

AFTER:
Access(groups=[HDP1.sample_07], props={SOURCE_HINT=null, MODEL_ID=Schema name=HDP1, nameInSource=null, uuid=mmuuid:004c32d9-8675-49cb-88ab-9d3635e08885, OUTPUT_COLS=[HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary], EST_CARDINALITY=-1.0, ATOMIC_REQUEST=SELECT HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary FROM HDP1.sample_07})


============================================================================
CONVERTING PLAN TREE TO PROCESS TREE

PROCESS PLAN =
AccessNode(0) output=[HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary] SELECT g_0.code, g_0.description, g_0.total_emp, g_0.salary FROM HDP1.sample_07 AS g_0

============================================================================

----------------------------------------------------------------------------
OPTIMIZATION COMPLETE:
PROCESSOR PLAN:
AccessNode(0) output=[HDP1.sample_07.code, HDP1.sample_07.description, HDP1.sample_07.total_emp, HDP1.sample_07.salary] SELECT g_0.code, g_0.description, g_0.total_emp, g_0.salary FROM HDP1.sample_07 AS g_0

============================================================================


> 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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