sqoop-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kathleen Ting (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SQOOP-2983) OraOop export has degraded performance with wide tables
Date Wed, 10 Aug 2016 00:30:20 GMT

    [ https://issues.apache.org/jira/browse/SQOOP-2983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15414503#comment-15414503
] 

Kathleen Ting commented on SQOOP-2983:
--------------------------------------

Thanks Attila for the revised patch. As a meta point, please don't delete patches from JIRA.
Instead please add new revisions (naming each new iteration with an increasing numerical value,
as you've done). No need to re-add the older iterations (e.g. SQOOP-2983-1.patch) to this
JIRA but just something to keep in mind going forward. Thanks again for your contribution.


> 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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message