[SQOOP-2983] OraOop export has degraded performance with wide tables

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.4.7
• Assignee: Attila Szabo
• Reporter: Attila Szabo
• Created: 18/Jul/16 18:47
• Updated: 16/Dec/16 10:59
• Resolved: 26/Oct/16 19:21

Description

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.

Issue Links

• links to: Review board