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From "Cheng Hao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4410) Dummy Storage handler for the "select" performance benchmarking
Date Wed, 24 Apr 2013 06:15:15 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13640144#comment-13640144
] 

Cheng Hao commented on HIVE-4410:
---------------------------------

for example:

CREATE TABLE dummy_uservisits (sourceIP STRING,destURL STRING,visitDate STRING,adRevenue DOUBLE,userAgent
STRING,countryCode STRING,languageCode STRING,searchWord STRING,duration INT) STORED BY 'org.apache.hadoop.hive.ql.metadata.DummyStorageHandler';

insert overwrite table dummy_uservisits select * from uservisits where (xxxxxxx); 

No real data be written into the dummy table, and great helpful in benchmarking the "Select"
performance.

                
> Dummy Storage handler for the "select" performance benchmarking
> ---------------------------------------------------------------
>
>                 Key: HIVE-4410
>                 URL: https://issues.apache.org/jira/browse/HIVE-4410
>             Project: Hive
>          Issue Type: New Feature
>          Components: StorageHandler
>            Reporter: Cheng Hao
>            Priority: Minor
>              Labels: storage-handler
>             Fix For: 0.9.0
>
>         Attachments: dummy.patch
>
>
> Create a Dummy Storage handler for the "select" performance benchmarking purpose, without
real data output(write to the console or disk). It's would be great helpful if the result
is "big".

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