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Posted to dev@sqoop.apache.org by "Attila Szabo (JIRA)" <ji...@apache.org> on 2016/07/18 18:47:20 UTC

[jira] [Created] (SQOOP-2983) OraOop export has degraded performance with wide tables

Attila Szabo created SQOOP-2983:
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             Summary: 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


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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