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From "Attila Szabo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SQOOP-2983) OraOop export has degraded performance with wide tables
Date Wed, 10 Aug 2016 08:06:22 GMT

    [ https://issues.apache.org/jira/browse/SQOOP-2983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15414882#comment-15414882
] 

Attila Szabo commented on SQOOP-2983:
-------------------------------------

Hi [~kathleen],

Thanks for the feedback. Previously I've done the same process you'd suggested, but thought
this is just a noise for the committer (to see there the previous patch files). I will keep
them in the future too!

Thanks,
[~maugli]

> OraOop export has degraded performance with wide tables
> -------------------------------------------------------
>
>                 Key: SQOOP-2983
>                 URL: https://issues.apache.org/jira/browse/SQOOP-2983
>             Project: Sqoop
>          Issue Type: Bug
>            Reporter: Attila Szabo
>            Assignee: Attila Szabo
>            Priority: Critical
>         Attachments: SQOOP-2983-5.patch
>
>
> The current version of OraOOP seems to perform very low from performance POV when --direct
mode turned on (regardless if the partitioned feature is turned of).
> Just as a baseline from the current trunk version:
> Inserting 100.000 rows into a 800 column wide Oracle table has 400-600 kb/sec with direct
mode on my cluster, while the standard oracle driver can produce up to 1.2-1.8 mb/sec. (depending
on the number of mappers, batch size).
> Inserting 1.000.000 rows into the same table goes up to 800k-1mb/sec with OraOOP, however
with the standard Oracle connector it's around 3.5mb/sec.
> It seems OraOOP export needs a thorough review and some fixing.



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