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 Mon, 19 Sep 2016 17:02:21 GMT

    [ https://issues.apache.org/jira/browse/SQOOP-2983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15504009#comment-15504009
] 

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

Piling on. [~david.robson], per your advice, [~maugli]'s reverted every change made to the
update code path, so it's only fixing the insert part. Thanks for all your past reviews of
SQOOP-2983 and when you get a chance, would you please review the latest revisions to SQOOP-2983
and then commit it once you find it satisfactory?

> 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, SQOOP-2983-6.patch, SQOOP-2983-7.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